#lampris guttatus

[bigoldeels]

opah 🌕 (lampris guttatus)

[herpsandbirds]

Opah or Moonfish (Lampris guttatus), family Lampridae, order Lampriformes, found in oceans around the world

This fish is capable of whole body endothermy (warm-bloodedness).

This is the only fish that is known to be capable of this. Some other fishes, like tunas and some sharks, are capable of "regional endothermy".

photograph by Ralph Pace (NOAA Fisheries)

[marinebiologyshitposts]

FISH KIN: @lampriformity, your fish kin is...

Lampris guttatus, the Opah! Now, I do personally think it's cheating to assign you a lampriforme, because like. It is literally in your name, but I just couldn't resist this guy- and how could I? The Opah is a discoid pelagic ray-finned fish closely related to the Oarfish, probably one of the best-known Lampriformes! The Lampriformes shaped like the Opah are called "bathysomes", where the longer, slimmer ones are called "taeniosomes"- translating to "deep-bodied" and "ribbon-bodied" respectively! While the Opah is kinda an odd-man-out among the Lampriformes, given its unusual shape, the fossil record shows that MOST prehistoric Lampriformes were bathysomes- and it's only relatively recently that they started getting stretched longer! Thank you so much for your donation!

[squidthehuman]

Fish-uary 11th: Deep-sea Fish

Opah! (Lampris sp.)

Named exactly what I would say if I ever saw one, the Opah is unique in that it is warm-blooded! This likely improves blood flow in cold water, giving it a higher speed to catch prey. In 2018, the Guttatus species was split into five based on lack of geographical overlap of populations.

@fish-daily

[dailymarinefish]

day 100, 03/05/24 - fish of the day is the opah!!!!! (Lampris guttatus)

[pocket-prawn]

Moonfish (lampris guttatus)

[thinkingnot]

LAMPRIS GUTTATUS!!

Opah 🤝 Wahoo fish named after what I would shout if I caught one 

[todropscience]

NOT TWO, BUT SIX SPECIES OF OPAH! 

Opah or moonfishes (genus Lampris)  currently  comprises  two  species,   Opah (Lampris  guttatus) and Southern Opah (Lampris immaculatus) presently known in both hemispheres in all oceans from tropical, temperate and sub-polar waters. But a new genetic and morphometric study describes three news species, and resurrects a opah species described in 1830, we have now 6 new opah species. 

As they are present in fisheries, fish buyers, initially noted variations in the appearance of opahs. Further  investigation  of  external  characteristics revealed that some specimens had a noticeably smaller eye diameter relative to body length and possessed variable spotting patterns and body pigmentation, proving that there were more than two species.

Though no directed fishery currently exists for opahs, their common  occurrence as bycatch and growing culinary popularity make these fishes a valued, and thus retained, addition to commercial fisheries. Also, opah (Lampris guttatus) have the ability of circulate warm-blood throughout the body, so it is the only known fish that has warm-blood. The endothermy in opah differs from other endothermic fishes in that they are able to circulate warm blood throughout their entire body and thus being the only fish group known that is able to elevate the temperature of their heart. This allows them to maintain enhanced physiological function at depth without returning to the surface to warm the heart.

Opahs often exhibit rapid vertical diving behavior, recent electronic tagging in the Pacific Ocean has documented Lampris spp.from the surface to depths in excess of 500 m.  

Image: Species of opah (in order)   Southern Opah Lampris immaculatus, common opah Lampris guttatus, Southern Spotted Opah Lampris australensis, East Atlantic Opah Lampris lauta, Bigeye Pacific Opah Lampris megalopsis and Smalleye Pacific Opah Lampris incognitus.

Reference: Underkoffler et al., 2018. A taxonomic review of Lampris guttatus (Brünnich 1788) Lampridiformes; Lampridae) with descriptions of three new species. Zootaxa

[ravenarisart]

Some technical illustrations all coloured up: 

Bee Scarab // Trichius fasciatus // Etsy.

Opah - Moonfish // Lampris guttatus // Etsy.

Watercolour pencils, pencils, ink, and some metallic paint because I can.

[mindblowingfactz]

There is only one known species of warm-blooded fish on Earth - the opah (Lampris guttatus)

[encyclopika]

#181 Dr Shrunk ~*~ Axolotl (Ambystoma mexicanum) ~*~ Paedomorphism - Dude Looks Like a Child #182 Freshwater Crab ~*~ Red-Clawed Crab (Perisesarma bidens) ~*~ Actually Likes it Brackish #183 Flame Angelfish ~*~ Flame Angelfish (Centropyge loricula) ~*~ Why So Colorful? #184 Threadfin Butterflyfish ~*~ Threadfin Butterflyfish (Chaetodon auriga setifer) ~*~ Eyespots #185 Splendid Garden Eel ~*~ Splendid Garden Eel (Gorgasia preclara) ~*~ Burrow For Life #186 Splendid Alfonsio ~*~ Splendid Alfonsio (Beryx splendens) ~*~ Eyeshine #187 Manta Ray ~*~ Oceanic Manta Ray (Mobula birostris) ~*~ Big and Beautiful Manta #188 Giant River Prawn ~*~ Giant River Prawn (Macrobrachium rosenbergii) ~*~ Male Hierarchy #189 Green Spotted Pufferfish ~*~ Green Spotted Puffer (Dichotomyctere nigroviridis) ~*~ Tiny Terror #190 Pot-bellied Seahorse ~*~ Pot-bellied Seahorse (Hippocampus abdominalis) ~*~ Male Pregnancy #191 Herabuna ~*~ Japanese White Crucian Carp (Carassius cuvieri) ~*~ Japanese Exclusive #192 Smalltooth Sand Tiger Shark ~*~ Smalltooth Sand Tiger Shark (Odontaspis ferox) ~*~ Shark Teeth #193 Silver Pomfret ~*~ Silver Pomfret (Pampus argenteus) ~*~ Lessepsian Migration #194 Japanese Halfbeak ~*~ Japanese Halfbeak (Hyporhamphus sajori) ~*~ Long Chin is Long  #195 Alligator Villagers ~*~ Crocodilian spp. ~*~ Crocodiles, Caimans, Alligators, and Gharials!

#196 Clam ~*~ Manila Clam (Ruditapes philippinarum) ~*~ Carbon Sequestration and Climate Change Actually #197 Amazon Leaffish ~*~ Amazon Leaffish (Monocirrhus polyacanthus) ~*~ Cryptic Behavior #198 Red Lionfish ~*~ Red Lionfish (Pterois volitans) ~*~ Venomous Invader of the Caribbean #199 White Ribbon Eel ~*~ White Ribbon Eel (Pseudechidna brummeri) ~*~ Why Long Fish So Long? #200 Opah ~*~ Opah (Lampris guttatus) ~*~ Whole-Body Endothermy #201 Yellow Boxfish ~*~ Yellow Boxfish (Ostracion cubicum) ~*~ Shell-Fish  #202 Horsehair Crab ~*~ Horsehair Crab (Erimacrus isenbeckii) ~*~ Setae: Hair for Crab #203 Black Ruby Barb ~*~ Purplehead Barb (Pethia nigrofasciata) ~*~ How Endemism Happens #204 Longsnout Seahorse ~*~ Slender Seahorse (Hippocampus reidi) ~*~ Suction Feeding #205 Threadfin Trevally ~*~ African Pompano (Alectis ciliaris) ~*~ Larval Mimicry #206 Gourami ~*~  Honey Gourami (Trichogaster chuna) ~*~ Color Edits #207 Duck Villagers ~*~  Anseriformes spp. ~*~ Duck Diversity #208 Weedy Stingfish ~*~ Weedy Stingfish (Scorpaenopsis cirrosa) ~*~ Scorpion Fish #209 Silver Arowana ~*~ Silver Arowana (Osteoglossum bicirrhosum) ~*~ Surface Predator #210 Longtooth Grouper ~*~ Longtooth Grouper (Epinephelus bruneus) ~*~ Growing Old - for Fish! #211 Yellow King Piranha ~*~ Yellow King Piranha (Serrasalmus ternetzi)~*~ Color Morph With it’s Own Binomial aka Confusing AF #212 Giant Squid ~*~ Giant Squid (Architeuthis dux) ~*~ The Kraken Itself! #213 Rainbow Trout ~*~ Rainbow Trout  (Oncorhynchus mykiss) ~*~ Subspeciation - Hows and Whys #214 Brook Trout ~*~ Brook Trout (Salvelinus fontinalis) ~*~ Trout? Almost as Bad as Bass! #215 Frogfish ~*~ Painted Frogfish (Antennarius pictus) ~*~ Form Follows Function

#216 Crystal Red Shrimp ~*~ Bee Shrimp (Caridina cantonensis) ~*~ Bred for Perfection #217 Pelly, Phyllis, & Pete ~*~ Great White Pelican (Pelecanus onocrotalus) ~*~ Pelicans! #218 Pelican Eel ~*~ Pelican Eel (Eurypharynx pelecanoides) ~*~ Deep Sea Mouth #219 Dark Banded Rockfish ~*~ Dark Banded Rockfish (Sebastes inermis) ~*~ Why Buying Local is Best #220 Diamond Tetra ~*~ Diamond Tetra (Moenkhausia pittieri) ~*~ Endemic and Endangered

#221 Crab ~*~ Christmas Island Crab (Gecarcoidea natalis) ~*~ Mass Migration #222 Yellow Starfish ~*~ Northern Pacific Seastar (Asterias amurensis) ~*~ Tube Feet! #223 Violet Sea Snail ~*~ Violet Sea Snail (Janthina janthina) ~*~ Macroplankton #224 Lemur-tail Seahorse ~*~ Japanese Seahorse (Hippocampus mohnikei) ~*~ Square Body #225 Coconut Crab ~*~ Coconut Crab (Birgus latro) ~*~ NOT Nightmare Fuel

#226 White Tuxedo Guppy / White Butterfly Koi / White Angelfish ~*~ Albinism, Luecism, and other color disorders #227 Blue Starfish ~*~ Blue Sea Star (Linckia laevigata) ~*~ The Rarity of Blue #228 Chip & CJ ~*~ American Beaver (Castor canadensis) ~*~ Debunking Beaver Myths #229 Redtail Catfish ~*~ Redtail Catfish (Phractocephalus hemioliopterus) ~*~ Drowned by a Fish #230 Ear Shell ~*~ Black Abalone (Haliotis cracherodii) ~*~ Cirri #231 Blanche ~*~ Trumpeter Swan (Cygnus buccinator) ~*~ Swans! #232 White Starfish ~*~ Asteroidea spp. ~*~ Biomineralization #233 Blackspot Tuskfish ~*~ Blackspot Tuskfish (Choerodon schoenleinii) ~*~ A Fish Using Tools #234 Purple Starfish ~*~ Purple Seastar (Pisaster ochraceus) ~*~ Weird For a Weirdo #235 Pacific Cod ~*~ Pacific Cod (Gadus macrocephalus) ~*~ Perfect Food Fish

#236 Noble Scallop ~*~ Noble Scallop (Mimachlamys crassicostata) ~*~ Useless Color #237 Shells Miniseries 2 - Regular Bivalves // Weird Bivalves // Gastropods

Animal Crossing Fish - Explained MASTERPOST

So, here’s the Master list of ALL of the fish explained posts, with links, common and scientific names, and the “extra” topics we covered, if any. The AC Fish Explained Series went on from April 6th, 2020 to March 2021! The series continued into the Museum Tour in June 2021. The series was started again for “fish past” in November 2021. 

If you liked the fish/science posts, please let me know! It makes me so happy to hear that people learned stuff from these! Without further adieu, here they are:

#1 Barreleye ~*~ (Macropinna microstoma) ~*~ Science in Video Games #2 Sea Bass ~*~ Japanese Sea Bass (Lateolabrax japonicus) ~*~       & Black Bass ~*~ Largemouth Bass (Micropterus salmoides) ~*~ Problems With Common Names #3 Sturgeon ~*~ Atlantic sturgeon (Acipenser oxyrinchus oxyrinchus) ~*~ Fish Migration #4 Football Fish ~*~ (Himantolophus spp.)~*~ Deep Sea Sex Life #5 Goldfish // Popeye Goldfish // Ranchu Goldfish ~*~ (Carassius auratus) ~*~ Goldfish Deserve Better

#6 Sea Butterfly ~*~ Common Clione (Clione limacina) ~*~ Problems with Common Names 2: Electric Boogaloo #7 Coelacanth ~*~ West Indian Ocean Coelacanth (Latimeria menadoensis) ~*~ Lazarus Species & Evolution of Tetrapods  #8 Crawfish ~*~ Red Swamp Crayfish (Procambarus clarkii) ~*~ Invasive Species #9 Acanthostega ~*~ (Acanthostega gunnari) ~*~ Stem-Tetrapods #10 Killifish ~*~ Japanese Rice Fish (Oryzias latipes) ~*~ Endemism

#11 Oarfish ~*~ Giant Oarfish (Regalecus glesne) ~*~ Myths and Legends #12 Loach ~*~ Japanese Striped Loach (Cobitis biwae) ~*~ Barbels & Mouth Position in Fish #13 Clownfish ~*~ Ocellaris Clownfish (Amphiprion ocellaris) ~*~ Sequential Hermaphroditism  #14 Surgeonfish ~*~ Regal Blue Tang (Paracanthurus hepatus) ~*~ The IUCN, Pet Trade #15 Koi ~*~ Amur Carp (Cyprinus rubrofuscus) subspecies   ~*~ Aquaculture

#16 Manila Clam ~*~ Japanese littleneck clam (Ruditapes philippinarum) ~*~ Mollusks #17 Barred Knifejaw ~*~ Barred Knifejaw (Oplegnathus fasciatus) ~*~ Broadcast Spawning & Larvae Dispersal  #18 Stringfish ~*~ Sakhalin Taimen (Parahucho perryi) ~*~ Anadromy & Osmolarity #19 Freshwater Goby ~*~ Dark Sleeper (Odontobutis obscura) ~*~ Motile Chromatophores #20 Ammonite ~*~ Ammonoidea spp. ~*~ Index Fossils

#21 Blue Marlin ~*~ Atlantic (Makaira nigricans) and/or Indo-Pacific (Makaira mazara) Blue Marlin ~*~ Apex Predators, Billfish Taxonomy #22 Giant Trevally ~*~ Giant Trevally (Caranx ignobilis) ~*~ Opportunistic Animals #23 Tuna ~*~ Bluefin Tuna (Thunnus spp) ~*~ Overfishing & Environmentally Sound Seafood #24 Mahi-Mahi ~*~ Mahi-Mahi (Coryphaena hippurus) ~*~ Meso-predators #25 Opthalmosaurus ~*~ (Ophthalmosaurus icenicus) ~*~ Convergent Evolution

#26 Tadpole & Frog ~*~ Japanese Tree Frog (Dryophytes japonicus) ~*~ Metamorphosis #27 Plesiosaur ~*~ (Futabasaurus suzukii) ~*~ Hydrodynamics of Long Necks #28 Archelon ~*~ (Archelon ischyros) ~*~ Eggs VS Live Birth #29 Snapping Turtle ~*~ Common Snapping Turtle (Chelydra serpentina) ~*~ Omnivores #30 Zebra Turkeyfish ~*~ Luna Lionfish (Pterois lunulata)  ~*~ Venom, Invasive Lionfish

#31 Dace ~*~ Big-Scaled Redfin (Tribolodon hakonensis) ~*~ Acidic Water Tolerance #32 Carp ~*~  Common Carp (Cyprinus carpio) ~*~ 100 Most Invasive Species List #33 Bitterling ~*~ Rosy Bitterling (Rhodeus ocellatus) or Japanese Rosy Bitterling (Rhodeus smithii) or hybrid ~*~ Nomenclature #34 Crucian Carp ~*~ Crucian Carp (Carassius carassius) ~*~ Low Oxygen Adaptations #35 Cherry Salmon ~*~ Cherry/Masu Salmon (Oncorhynchus masou) ~*~ Semelparity VS Iteroparity #36 Anchovy ~*~ Japanese Anchovy (Engraulis japonicus) ~*~ Gills #37 Seahorse ~*~ Korean Sea Horse (Hippocampus haema) ~*~ Seahorses #38 Ribbon Eel ~*~ Ribbon Eel, (Rhinomuraena quaesita) ~*~ Sequential Hermaphroditism (Again) #39 Suckerfish ~*~ Common Remora (Remora remora) ~*~ Mutual Relationships #40 Neon Tetra ~*~ Neon Tetra (Paracheirodon innesi) ~*~ Neon Tetra in the Pet Trade

#41 Piranha ~*~ Red-bellied Piranha (Pygocentrus nattereri) ~*~ Bite Force #42 Arapaima ~*~ Arapaima/Pirarucu (Arapaima gigas) ~*~ Air-Breathing (Physostomes) #43 Pufferfish ~*~ Long-spine Porcupinefish (Diodon holocanthus) ~*~ Family Toxin #44 Ocean Sunfish ~*~ Ocean Sunfish (Mola mola) ~*~ Sunbathing fish #45 Spotted Garden Eel ~*~ Spotted Garden Eel (Heteroconger hassi) ~*~ Burrowing

#46 Horseshoe Crab ~*~ Atlantic Horseshoe Crab (Limulus polyphemus) ~*~ Horseshoe Crabs Are Amazing #47 Moon Jellyfish ~*~ Moon Jellfyfish (Aurelia aurita) ~*~        & Sea Anemone ~*~ Magnificent Sea Anemone (Heteractis magnifica) ~*~ Cnidarians  #48 Butterflyfish ~*~ Oriental Butterflyfish (Chaetodon auripes) ~*~ Monogamy #49 Great White Shark ~*~ Great White Shark (Carcharodon carcharias) ~*~ Functional Endothermy & Shark Attack #50 Whale Shark ~*~ Whale Shark (Rhincodon typus) ~*~ Filter-feeding

#51 Hammerhead Shark ~*~ Scalloped Hammerhead (Sphyrna lewini) ~*~ Evolution of the Hammerhead/Cephalofoil #52 Saw Shark ~*~ Japanese Saw Shark (Pristiophorus japonicus) ~*~ Saw Shark VS Sawfish #53 Shark Tooth Whorl ~*~ Helicoprion spp. ~*~ Chimeras #54 Dorado ~*~ Dorado (Salminus brasiliensis) ~*~ Protecting Species for Profit #55 Guppy ~*~ Guppy  (Poecilia reticulata) ~*~ Sexual Dimorphism

#56 Angelfish ~*~ Freshwater Angel (Pterophyllum scalare)  ~*~ Parental Care #57 Vampire Squid ~*~ Vampire Squid (Vampyroteuthis infernalis) ~*~ Oxygen Minimum Zone #58 Giant Isopod ~*~ (Bathynomus giganteus) ~*~ Deep-Sea Gigantism #59 Tilapia ~*~ Nile Tilapia (Oreochromis niloticus) ~*~ Aquaculture Issues #60 Pascal ~*~ Asian Sea Otter (Enhydra lutris lutris) ~*~ Mom’s Fave Foods & Pascal the Philosopher

#61 Arowana ~*~ Asian Arowana (Scleropages formosus) ~*~ Species Definition #62 Sea Pineapple ~*~ Sea Pineapple (Halocynthia roretzi) ~*~ Chordate Zoology #63 Gigas Giant Clam ~*~ Tridacna gigas ~*~ Clam Myths #64 Horse Mackerel ~*~ Japanese Jack Mackerel (Trachurus japonicus) ~*~ Fisheries #65 Mantis Shrimp ~*~ Peacock Mantis Shrimp (Odontodactylus scyllarus) ~*~ Eyes

#66 Moray Eel ~*~ Kidako Moray Eel (Gymnothorax kidako) ~*~ Pharyngeal Jaws #67 Pale Chub ~*~Pale Chub (Zacco platypus) ~*~ Mate Choice #68 Hermit Crab ~*~ Passionfruit Hermit (Coenobita cavipes) ~*~ Vacancy Chain for Hermits #69 Squid ~*~ Bigfin Reef Squid (Sepioteuthis lessoniana) ~*~ Morphology #70 Ray ~*~ Red Stingray (Dasyatis akajei) ~*~ Batoids

#71 Napoleonfish ~*~ Humphead Wrasse (Cheilinus undulatus) ~*~ IUU Fishing #72 Scallop ~*~ Ezo Giant Scallop (Mizuhopecten yessoensis) ~*~ Swimming, Seeing Bivalves #73 Octopus ~*~ California Two-Spot Octopus (Octopus bimaculoides) ~*~ Intelligence #74 Soft-shell Turtle ~*~ Chinese Soft-shell Turtle (Pelodiscus sinensis) ~*~ Evolution of Turtle Shells #75 Pondskater ~*~ Aquarius paludum ~*~ Surface Tension

#76 Myllokunmingia ~*~ Myllokunmingia fengjiaoa ~*~  Cambrian Explosion #77 Gazami Crab ~*~ Gazami Crab (Portunus trituberculatus) ~*~ Swimming Crabs #78 Acorn Barnacle ~*~ Balanus trigonus ~*~ Crustacean Diversity #79 Bluegill ~*~ Bluegill (Lepomis macrochirus)  ~*~ Fish Tails #80 Tiger Prawn ~*~ Giant Tiger Prawn ( Penaeus monodon) ~*~ Crustacean Lifecycle & Nauplius

#81 Sea Grapes ~*~ Sea Grapes (Caulerpa lentillifera) ~*~ Algae #82 Giant Snakehead ~*~ Northern Snakehead (Channa argus) ~*~ Invasive Snakeheads #83 Spinosaurus ~*~ Spinosaurus aegyptiacus ~*~ Swimming Dinosaurs #84 Umbrella Octopus ~*~ Flapjack Octopus (Opisthoteuthis californiana) ~*~ Oceanic Layers #85 Sea Slug ~*~ Hypselodoris festiva ~*~ Nudibranchs

#86 Salmon ~*~ Chum Salmon (Oncorhynchus keta) ~*~ The Changing Salmon #87 Char ~*~ White-Spotted Char (Salvelinus leucomaenis) ~*~ Problem with Dams #88 Golden Trout ~*~ California Golden Trout  (Oncorhynchus mykiss aguabonita) ~*~ Rainbow Trout Subspecies #89 King Salmon ~*~  Chinook Salmon (Oncorhynchus tshawytscha) ~*~ Site Fidelity #90 Pearl Oyster ~*~ Akoya Pearl Oyster (Pinctada imbricata fucata) ~*~ Pearl Formation

#91 Chambered Nautilus ~*~ Chambered Nautilus (Nautilus pompilius) ~*~ Vertical Migration #92 Gar ~*~Spotted Gar (Lepisosteus oculatus) ~*~ Holostei Fish #93 Flatworm ~*~ Pseudoceros bimarginatus ~*~ About Flatworms #94 Diving Beetle ~*~ Cybister chinensis ~*~ How Insects Breathe #95 Giant Water Bug ~*~ Lethocerus deyrollei ~*~ Bite of the Toe Biter

#96 Sea Urchin ~*~ Purple Sea Urchin (Paracentrotus lividus) ~*~ Biological Symmetry  #97 Yellow Perch ~*~ Yellow Perch (Perca flavescens) ~*~ Cannibalism #98 Oyster ~*~ Pacific Oyster (Crassostrea gigas) ~*~ Oyster Reefs #99 Catfish ~*~ Amur Catfish (Silurus asotus) ~*~ Catfish are Ridiculous #100 Dunkleosteus ~*~ Dunkleosteus terrelli ~*~ Placoderms

#101 Rainbowfish ~*~ Ornate Rainbowfish (Rhadinocentrus ornatus) ~*~ Endemism (Again) #102 Slate Pencil Urchin ~*~ Red Slate Pencil Urchin  (Heterocentrotus mamillatus) ~*~ Urchin Spines #103 Saddled Bichir ~*~ Saddled Bichir (Polypterus endlicheri) ~*~ Synapomorphy #104 Nibble Fish ~*~ Doctor Fish (Garra rufa) ~*~ Ichthyotherapy #105 Sweetfish ~*~ Ayu (Plecoglossus altivelis) ~*~ Traditional Cormorant Fishing

#106 Sweet Shrimp ~*~ Amaebi (Pandalus eous) ~*~ Shrimp Taxonomy #107 Anomalocaris ~*~ Anomalocaris canadensis ~*~ Radiodontids #108 Venus’ Flower Basket ~*~ Venus’ Flower Basket  (Euplectella aspergillum) ~*~ Sponges #109 Sea Cucumber ~*~ Japanese Spiky Sea Cucumber (Apostichopus japonicus) ~*~ Sea Cucumbers #110 Olive Flounder ~*~ Olive Flounder (Paralichthys olivaceus) ~*~ Flatfish Lesson 1 #111 Dab ~*~ Alaska Plaice  (Pleuronectes quadrituberculatus) ~*~ Flatfish Lesson 2 #112 Mitten Crab ~*~  Chinese Mitten Crab (Eriocheir sinensis) ~*~ What Is a Crab? #113 Snow Crab ~*~ Snow Crab (Chionoecetes opilio) ~*~ Japanese Names #114 Dungeness Crab ~*~ Dungeness Crab (Metacarcinus magister) ~*~ Ocean Acidification #115 Red King Crab ~*~ Red King Crab (Paralithodes camtschaticus) ~*~ Imposter Crab

#116 Red Snapper ~*~ Northern Red Snapper (Lutjanus campechanus) ~*~ Longevity  #117 Turban Shell ~*~ Horned Turban Snail (Turbo cornutus) ~*~ Snails #118 Trilobite ~*~ Cheirurus spp. ~*~ How Fossils Form #119 Whelk ~*~ Common Whelk (Buccinum undatum) ~*~ Predatory Snails #120 Sea Star ~*~ Brick Red Sea Star (Anthaster valvulatus) ~*~ All About Sea Stars

#121 Seaweed ~*~ Wakame (Undaria pinnatifida) ~*~ More Algae #122 Sea Pig ~*~ Sea Pig (Scotoplanes globosa) ~*~ Dueterostomes and Protostomes #123 Pike ~*~ Northern Pike (Esox lucius) ~*~ Aggression #124 Mussel ~*~ Bay Mussel (Mytilus trossulus) ~*~ Ecosystem Services #125 Abalone ~*~ Black Abalone (Haliotis cracherodii) ~*~ Biomimicry

#126 Pond Smelt ~*~ Wakasagi (Hypomesus nipponensis) ~*~ Ice Fishing #127 Spiny Lobster ~*~ Japanese Spiny Lobster (Panulirus japonicus) ~*~ Lobster Imposter #128 Lobster ~*~ American Lobster (Homarus americanus) ~*~ Immortality #129 Coconuts ~*~ Coconut Palm (Cocos nucifera) ~*~ Unorthodox Seed Dispersal #130 Betta ~*~ Betta/Siamese Fighting Fish (Betta splendens) ~*~ Labyrinth Fish #131 Blowfish ~*~ Fine Patterned Puffer (Takifugu poecilonotus) ~*~ Preparing Toxic Fugu #132 Gulliver/Gullivarrr ~*~ Black-tailed Gull (Larus crassirostris) ~*~ Seabirds #133 Eusthenopteron ~*~  Eusthenopteron foordi ~*~ You’re a Fish #134 Octopus Villager ~*~ Octopus spp. ~*~ Anatomy of an Octopus #135 Spider Crab ~*~ Japanese Spider Crab (Macrocheira kaempferi) ~*~ Big Animals in the Oceans

#136 Beach Shells ~*~ multiple spp. ~*~ General About Spp. #137 Penguin Villager ~*~ Sphenisciformes spp. ~*~ Penguins! #138 Firefly Squid ~*~ Firefly Squid  (Watasenia scintillans) ~*~ Bioluminescence #139 Wardell ~*~ West Indian Manatee (Trichechus manatus) ~*~ Sirenia, the Manatees and Dugong #140 Lyle & Lottie ~*~ Japanese River Otter (Lutra nippon) ~*~ Extinct River Otters    

#141 Spring Mackerel ~*~ Japanese Spanish Mackerel (Scomberomorus niphonius) ~*~ Scombrid Fish #142 Moorish Idol ~*~ Moorish Idol (Zanclus cornutus) ~*~ Fish in Culture #143 Barbel Steed ~*~ Barbel Steed (Hemibarbus labeo) ~*~ More F’n Cyprinids #144 Nomura’s Jellyfish ~*~ Nomura’s Jelly (Nemopilema nomurai) ~*~ Native Invader  #145 Frog Villager ~*~ Anura spp. ~*~ Frogs vs Toads #146 Flying Fish ~*~  Bennet’s Flying Fish (Cheilopogon pinnatibarbatus) ~*~ How They Fly #147 Pineapple Fish ~*~ Japanese Pineapple Fish (Monocentris japonica) ~*~ Armor #148 Eel ~*~ Japanese Eel (Anguilla japonica) ~*~ Catadromous Lifestyle #149 Sea Bunny ~*~ Sea Bunny (Jorunna parva) ~*~ The Fuzz is a Lie #150 Hippo Villager ~*~ Common Hippo, (Hippopotamus amphibius) ~*~ Hippos

#151 Largehead Hairtail ~*~ Largehead Hairtail (Trichiurus lepturus) ~*~ Species Complex Confusion #152 Lumpfish ~*~  Balloon Lumpfish (Eumicrotremus pacificus) ~*~ Suction #153 Giant Catfish ~*~ Giant Lake Biwa Catfish (Silurus biwaensis) ~*~ Earthquake Fish #154 Kapp’n ~*~ Kappa ~*~ The Legend of the Kappa #155 Achilles Surgeonfish ~*~ Achilles Tang (Acanthurus achilles) ~*~ A Fish’s Achilles’ Heel #156 Comb Jelly & Northern Comb Jelly ~*~ Ctenophore spp. ~*~ Ctenophores Are Not Jellyfish #157 Flora ~*~  American Flamingo (Phoenicopterus ruber) ~*~ Flamingos! #158 Red Sea Bream ~*~ Madai (Pagrus major) ~*~ Seasonal Luxury #159 Goliath Frog ~*~ Goliath Frog (Conraua goliath) ~*~ Biggest Frog! #160 Bering Wolffish ~*~ Bering Wolffish (Anarhichas orientalis)  ~*~ Wolffish #161 Bicolor Dottyback ~*~ Bicolor Dottyback (Pictichromis paccagnella) ~*~ Incertae sedis #162 Zebra Moray ~*~ Zebra Moray (Gymnomuraena zebra) ~*~ More Morays #163 Vampire Crab ~*~ (Geosesarma dennerle) ~*~ TFW the Pet Trade Discovers Things Faster Than Science #164 Phineas ~*~ Japanese Sea Lion (Zalophus japonicus) ~*~ Seals vs Sea Lions #165 Amberjack ~*~ Japanese Amberjack (Seriola quinqueradiata) ~*~ Farmed Predators

#166 Sakura Shrimp ~*~ Sakura Shrimp (Sergia lucens) ~*~ Actually Prawns #167 Black Ghost Knifefish ~*~ Black Ghost Knifefish (Apteronotus albifrons) ~*~ It’s Electric! #168 Black Clownfish ~*~ Ocellaris Clownfish - AGAIN! (Amphiprion ocellaris) ~*~ Polymorphism #169 Pink Anemonefish ~*~ Pink Skunk Clownfish (Amphiprion perideraion) ~*~ Mutuals with an Anemone  #170 Wakin Goldfish ~*~ Goldfish (Carassius auratus) ~*~ Mutants #171 Skipjack Tuna ~*~ Skipjack Tuna (Katsuwonus pelamis) ~*~ Pollution? In my seafood? More likely than you think! #172 Yellowfin Tuna ~*~ Yellowfin Tuna (Thunnus albacares) ~*~ Associations #173 Tiger Catfish ~*~ Tiger Shovelnose Catfish (Pseudoplatystoma spp.) ~*~ Diverse Cats #174 Great Barracuda ~*~ Great Barracuda  (Sphyraena barracuda) ~*~ Unique Predatory Methods #175 Atlantic Mackerel ~*~ Atlantic Mackerel (Scomber scombrus)  ~*~ Being a Living Trawl Net

#176 Wendell ~*~ Walrus (Odobenus rosmarus) ~*~ Walrus! #177 Pacific Saury ~*~ Pacific Saury (Cololabis saira) ~*~ Seasonal Migration #178 Spotted Knifejaw ~*~ Spotted Knifejaw (Oplegnathus punctatus) ~*~ Range Expansion #179 Discus ~*~ Discus (Symphysodon discus) ~*~ Parenting like a Mammal #180 Harlequin Shrimp ~*~ Harlequin Shrimp (Hymenocera picta) ~*~ Tiny knights killing monsters

~~The Museum Tour - Habitats~~ #1 Open Ocean #2 Nearshore                     #3 Coral Reefs #4 Estuary #5 Rivers #6 Lakes and Ponds #7 Wetlands #8 Aquarium Hobby Tank #9 Polar Regions #10 The Abyss

[rudycat17]

Ископаемые биомолекулы указали на теплокровность большинства динозавров

#биология, #эволюция, #палеонтология, #динозавры

Ученые при помощи спектроскопии проанализировали химический состав окаменелостей вымерших животных и пришли к выводу, что общий предок динозавров был эндотермом (теплокровным), так как эндотермия была обнаружена у ящеротазовых (в том числе у тираннозавра и зауропод) и у части птицетазовых динозавров. Однако в процессе эволюции некоторые птицетазовые (например, трицератопс) стали эктотермными, то есть холоднокровными. Исследование опубликовано в журнале Nature.

Эндотермами называют животных, которые могут сами поддерживать постоянную температуру тела, в то время как у эктотермов температура тела зависит от условий окружающей среды. Среди современных животных эндотермия характерна для млекопитающих и птиц, причем возникла она у них независимо. Кроме того, эндотермия всего тела обнаружена и у рыбы Lampris guttatus, хотя в ее случае источник тепла не метаболические реакции, а работа грудных плавников.

Палеонтологов давно занимает вопрос, когда именно возникла эндотермия в линии, ведущей к птицам. В последние годы все больше данных указывает на то, что нептичьи динозавры были эндотермами: это и довольно высокая скорость роста (ее определяют при помощи палеогистологических методов), и перьевой покров у многих динозавров, и находки их окаменелостей в полярных широтах. В одном из последних исследований палеонтологи при помощи анализа стабильных изотопов в скорлупе яиц выяснили, что эндотермия была характерна для всех основных групп динозавров, даже для зауропод, которых многие считали гигантотермами (так называют животных, которые поддерживают постоянную температуру тела за счет своих размеров).

Палеонтологи и химики из Испании и США во главе с Ясминой Виманн (Jasmina Wiemann) из Йельского университета решили выяснить уровень метаболизма вымерших животных при помощи анализа ископаемых биомолекул. Ученые сосредоточились на конечных продуктах перекисного окисления липидов (advanced lipoxidation end-products, ALE), которое вызывается активными формами кислорода. Последние, в свою очередь, образуются в результате биохимических процессов, генерирующих тепло, — поэтому количество ALE в ископаемых костях может говорить об уровне метаболизма. Кроме того, эти биомолекулы достаточно стабильны, поэтому хорошо сохраняются на протяжении миллионов лет.

Исследователи проанализировали химический состав костей, зубов и скорлупы яиц динозавров, птерозавров и других вымерших животных, а также — для сравнения — современных млекопитающих, птиц и рептилий. Для этого ученые воспользовались методами рамановской микроспектроскопии и инфракрасной спектроскопии с преобразованием Фурье. Исследователи действительно обнаружили следы ALE в образцах, но лучше всего они сохранились в ископаемых костях, поэтому исследователи сосредоточились на них. На основе полученных данных специалисты рассчитали скорость метаболизма животных — и затем использовали результаты при построении филогенетического дерева и реконструкции предковых состояний.

Эндотермами оказались большинство динозавров: тероподы (в том числе тираннозавр), зауропод из семейства диплодоцид и некоторые птицетазовые (орнитопод дриозавр, пахицефалозавр и панцирный динозавр нодозавр). Но другие птицетазовые — стегозавр, трицератопс и гадрозавр — оказались эктотермами. При этом изначально для динозавров все же была характерна эндотермия — то есть эти птицетазовые вторично утратили ее. Более того, высокий уровень метаболизма был характерен и для общего предка динозавров и птерозавров.

Эндотермию обнаружили и у морских рептилий плезиозавров, а также у варановых (в��лючая ископаемый вид Saniwa ensidens). Вараны обычно считаются эктотермами, но авторы считают, что их можно назвать факультативными эндотермами, и отмечают, что это неудивительно, так как для варанов характерен довольно высокий метаболизм.

Авторы считают, что их метод точнее, чем определение уровня метаболизма по изотопному составу окаменелостей (при фоссилизации может измениться соотношение изотопов) или при помощи палеогистологии (скорость роста лишь ��освенно указывает на уровень метаболизма).

___________________________

От редактора N+1:

К результатам исследований ископаемых биомолекул всегда нужно относиться с определенной долей скептицизма. Цератопсы и гадрозавры обитали и в высоких широтах (причем круглый год), если они были эктотермами, то не очень понятно, как это им удавалось.

[abdulaziz2023]

سمكة القيصانة، أو الأُبّاهُ opah أو سمكة القمر

الاسم العلمي : Lampris guttatus

[kirinfishace]

Oooooooo I did a project on these guys! Fun fact, Opahs are the only completely endothermic, or warm blooded, fish species (Only one that we know of at least)!

Massive and mysterious, a 100-pound fish washed ashore. Scientists hope to learn its secrets.

A 3½-foot, 100-pound Opah was found July 14 on Sunset Beach on the northern Oregon coast.

Officials at Seaside Aquarium were alerted early Wednesday to a rare scene on the sands of the northern Oregon coast: A large, round, glistening opah, or Moonfish, weighing 100 pounds had stranded ashore.

The fish was 3½-feet long — its huge body a mix of silvery and bright reddish-orange scales, dotted with white spots. Its large eyes feature hints of gold. Tiffany Boothe, assistant manager at the aquarium in the small beach community of Seaside, said it’s the first opah fish she has seen on area beaches.

Boothe said it was not clear how this fish died, but she noted that it was in “great condition, meaning it was close to shore when it died.”

The unusual-looking fish caused “quite the stir,” the Seaside Aquarium posted on Facebook on the day of the recovery. Boothe said officials at the aquarium called as many people as they could to come see the fish, and they offered a glimpse to aquarium visitors, too…

Read more:  https://www.washingtonpost.com/science/2021/07/18/oregon-opah-rare-100-pound-fish

photograph by Tiffany Boothe/Seaside Aquarium

[factoides-yajan]

Factoide #1286

Científicos encontraron el primer pez de sangre caliente

Todos los peces son de sangre fría, ¿no? Definitivamente no. No, al menos, a partir de que un grupo de científicos norteamericanos descubrieron un pez que tiene 100% sangre caliente. ¿Sorprendido? Seguro que si, continúa leyendo para averiguar de qué se trata exactamente.

Los diferentes mecanismos de termoregulación

Los términos «sangre fría» y «sangre caliente» han quedado un poco obsoletos en la comunidad científica ya que, en realidad, hacen referencia a diferentes mecanismos de termoregulación de los animales.

Normalmente se agrupa debajo del término sangre fría a tres mecanismos diferentes: Ectotermia, Poiquilotermia y Bradimetabolismo. Los científicos sostienen que la mayoría de los animales considerados de sangre fría no tienen estos tres mecanismos a la vez, sino que tienen alguna combinación con sus mecanismos de termoregulación respectivamente complementarios, los llamados de sangre caliente: Endotermia, Homotermia y Taquimetabolismo.

El pez de sangre caliente

Más allá de la distinción que hicimos anteriormente, en general, se dice que los peces son de sangre fría ya que la mayoría de las especies conocidas utilizan predominantemente mecanismos como la Ectotermia, la Poiquilotermia y el Bradimetabolismo. Ahora bien, un grupo de científicos de la National Oceanic and Atmospheric Administration (NOAA, en Estados Unidos) descubrió un pez que no podría entrar en esa categoría: un pez con 100% de sangre caliente.

Según el reporte de los investigadores la especie Lampris guttatus es capaz de mantenerse a una profundidad aproximada de 300 metros con una temperatura estable, algo que nunca se había constatado en ningún otro pez. Este mecanismo de adaptación, además, parece tener una excelente ventaja evolutiva: esta especie de pez es un feroz depredador ya que puede moverse mucho más rápido que sus potenciales presas

La forma en que funciona este mecanismo es batiendo sus grandes aletas pectorales como alas, lo cual calienta los músculos y la sangre circulante, que se bombea a través del resto de su cuerpo, acelerando su metabolismo. Los científicos descubrieron que el secreto estaba en el particular diseño de sus branquias. Esta configuración se conoce como un sistema de intercambio de calor a contracorriente, y significa que el calor generado por el cuerpo puede ser reciclado, en lugar de ser disperso en el ambiente.

Este mecanismo ya se conocía en otras especies, pero nunca se había observado en peces de agua profunda, lo cual le da una especial ventaja evolutiva a la especie Lampris guttatus. Esto parece confirmarse, además, por el hecho de que en los últimos años la población de esta especie parece haberse multiplicado rápidamente

[Publicado originalmente el 13 de Mayo del 2015]

[phgq]

Giant fish caught in Eastern Samar after Masbate quake

#PHnews: Giant fish caught in Eastern Samar after Masbate quake

TACLOBAN CITY – A fisherman caught a deep-sea giant fish in Oras, Eastern Samar, hours after the strong quake that rattled the central Philippines on Tuesday.

Bureau of Fisheries and Aquatic Resources (BFAR) 8 (Eastern Visayas) Director Juan Albaladejo said there is a big possibility that earthquake shock waves “spooked” the Opah fish, causing it to surface on shallow waters in Tubabao Island in Oras town.

Fisherman Armando Amos of the town's Sta. Monica village caught the fish through hook and line.

The 65-kg. fish, commonly known as moonfish, is a deep-water species found 500 meters deep into the sea.

The Opah (scientific name Lampris guttatus) is a warm-blooded fish, which makes it a high-performance predator that swims faster and sees better.

“This was quite a revelation, seeing this magnificent fish. We know that it is quite abundant in our eastern seaboard, usually schooling with highly migratory tuna species but rarely seen,” Albaladejo said in a phone interview on Wednesday.

He said the fishermen sold the fish at the local market at PHP200 per kg.

The giant fish was washed up to the shallow part of the sea and caught shortly after a magnitude 6.6 tectonic quake struck Cataingan town in Masbate province and shook several areas in the Visayas at about 8:03 a.m. on Tuesday. (PNA)

  ***

References:

* Philippine News Agency. "Giant fish caught in Eastern Samar after Masbate quake." Philippine News Agency. https://www.pna.gov.ph/articles/1112721 (accessed August 19, 2020 at 06:27PM UTC+14).

* Philippine News Agency. "Giant fish caught in Eastern Samar after Masbate quake." Archive Today. https://archive.ph/?run=1&url=https://www.pna.gov.ph/articles/1112721 (archived).