#look at that teeny tiny caudal fin

[canisalbus]

fish vasco as a catfish so u can substitute his big droopy ears for long whiskers. there was a case of a golden catfish apparently soooo im Just Saying

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[taro-pdf]

tell me about the sunfish

OH BOY DO YOU KNOW HWAT YOU HAVE DONE??? HERE I GO:

(IDs in alt text.)

So there's this family of fish called molidae, yeah? and in molidae there's three families, Mola, Masturus, and Ranzania, and five species.

All of them have weirdo tails, in that their tails are like, gone. Their caudal fin is very stunted and used like a rudder, while anal and dorsal are used to propel. See below.

That's a Mola alexandrini and Mola tecta (drawn by yours truely), aka gian sunfish and hoodwinker sunfish! Molidae start their life as teeny tiny larva only a few cells large, and only a few of the thousands eggs released make it to adulthood. Molas are also the largest boney fish. The largest recorded Mola is M. alexandrini, with the most recent record breaker being about 11 feet long and weighing 6,000 lbs. Thats about 3.4 meters & 2700 kg! !!! WILD.

Despite being ginormous, Molidae as a whole are actually really low in nutritional value. See, the fish of Molidea's diet is soft squishy low calorie things they can inhale. They inhale because they can't close their mouths; they're always open, looking extremely surprised. So they eat things like jellyfish, zooplankton, and squid.

And how they go about eating is really cool, too. All the genus Mola dives thousands of feet in the ocean! Durring the day, most of their prey is down there due to the "diurnal vertical migration"--zooplankton travel up at night and down durring the day. Mola's eyesight isn't the best, so they dive durring the day to have better light.

Funny thing is, they don't have swim bladders. How do they move through the changing pressure? Their bone's and flesh just happen to be about the same density as water, so they just hang out wherever they stop swimming.

Another funny thing, Molidae are cold blooded. And the ocean is cold! this limits how long they can dive for. Older, larger adults can dive for much longer than smaller ones. Regardless, when they come up they have to warm up again, which they do by lying parallel and sunning themselves. Which where the Mola mola's common name comes from! Ocean Sunfish!

The larvea don't sun themselves, though, because they are not the same shape as all. Observe the bean!

The larvae try their best to survive, but most of them die. Thats why Molidae adults produce so many eggs---they (read: have evolved to) to essentially cross their fingers and hope some of them survive to adulthood.

Once adults, their survival chances greatly increase for a lot of reasons. One, their skin is mostly tough cartilage, hard to bite through, though sea lions and orcas do try. Then, like said before, they are pretty low in nutritional value. And finally, that I know of, they are open ocean fish. It doesn't always feel like it, but the ocean is very big. It's not often that molidae come across predators.

They do come across reefs fairly often though, and there are some interesting behaviors they exhibit. Like many other fishes, they let cleaner fish clean them. For more pesky parasites, they float at the very surface of the water and let seabirds eat the parasites off their skin.

Speaking of skin, i most recently learned that M. alexandrini changes color, and it can do it quite rapidly. It seems like when they are startled they can make their patterns more bold, a display showing just how large they really are. These patterns remain relatively stable & can be used for identification.

[thecottageinthedark]

#a gargantuan banana slug#look at that teeny tiny caudal fin#shovel headed soft bellied beast#excellent fish#so yellow#answered#okaysional

fish vasco as a catfish so u can substitute his big droopy ears for long whiskers. there was a case of a golden catfish apparently soooo im Just Saying

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