#Coldwater tropicals

[aquariuminfobureau]

The peppered Corydoras

Just a reminder that the 22 or 23 degree temperature range that is often suggested for the popular peppered or mottled Corydoras, Corydoras paleatus, are based on year-round averages for its natural range, in the Lower Parana and La Plata, Argentina. In reality the region is not tropical, and the climate is seasonal, with winter temps dropping as low as 18 degrees, and summer temps soaring as high as 28 degrees.

This origin actually gives C. paleatus a wide tolerance of ambient temperatures, though those temperatures too close to the higher and lower ends of that range, should not be maintained permanently. Whereas there is a reason, countless hobbyists have maintained this fish in perfect health, year round, at tank temperatures of 22 to 25 degrees. These are not the water temperatures preferred by flag or discus cichlids, for example, but 24 degrees is the standard temperature for running tropical community aquaria.

For C. paleatus the pH ought to be set to around 7, or slightly over, as per their wild origins. These are not a fish from tropical blackwaters, nor hardwater lakes. Care in the aquarium is otherwise as standard, for the other popular Corydoras species. The aquarium substrate should be fine sand, food should be dried and defrosted items suitable for small, largely insectivorous catfishes, and the fish themselves should be maintained in a group, lest singular corys become less bold.

[plaguedocboi]

Cool to see a coldwater rocky shore adapted starfish just grasp your hand like that, the tropical reef species we have here just really harden and once relaxed, glide over your fingers

Yeah the starfish at the aquarium here will just Grab anything including people. In the case of this picture, which I’m guessing is what you’re referring to;

I had picked him up for some kids to pet and as I was giving them Fun Starfish Facts he just realized oh. I can climb this.

And suddenly I had a starfish bracelet

[draconesmundi]

Thinking of creative ways to group dragons for fun lore posts, making vague polls to get an idea on what people might like to see!

[skippygoldfish]

I think I've said this before BUT. Since many fancy goldfish are bred and raised in warm water and seem to actually prefer warmer water than their coldwater carp ancestors, the temperature difference between them and tropical fishes isn't that much of an issue. But seeing goldfish being kept with anything other than more goldies still feels so wrong. I think it's because goldfish have such different care needs? Less decor, more food, more large water changes. They are SO much more domesticated compared to tropical fish, which are usually not far derived from their wild counterparts. Plus they are clumsy, and grow large enough to accidentally eat many tropicals.

[eccentric-nucleus]

or like here is another game i played some in 2022: megaquarium

here’s the thing with megaquarium: it is not really an aquarium simulator. it’s much more of a “manage throughput of a theme park” simulator a la theme park, rollercoaster tycoon, etc. just the themes are aquarium boxes

things that are not covered in the simulated mechanics in megaquarium:

animals reproducing. no matter how many fish of the same species you have in the same aquarium, you will never get new fish. you gotta buy or trade for each new fish. this also means you never have to worry about overcrowding

animals dying of old age. with the above this means that fish populations never rise or fall unless you mess up and starve them to death / otherwise make their tank uninhabitable

animals eating plants. you can’t e.g., defray food pellet costs by planting an edible plant in the aquarium with a fish that eats it. all food comes in the form of pellets from food boxes

aquarium plant growth. some fish do grow, but no plants grow; they have constant stats and are effectively just another kind of decoration. so, again, no seeding a nwe aquarium with cuttings; you have to separately buy every plant you put down. some plants do impact water quality, but the game never asks you to engage with that by e.g., making a no-filter aquarium

anything to do with substrate. no deep substrates to foster different kinds of bacteria, no needing to ‘cycle’ a tank before fish are ready to be placed inside. there are 'live rocks’ you can put into a tank, which do some filtering, but again that’s a static bnus, and also you can put 'live rocks’ next to 'rocks’ and the rocks will never be colonized & turn into live rocks. “filter quality” is a numeric value that is the sum of all attached filters and the tank is just instantly at that water quality level

anything to do with different kinds of water. there are tropical fish, which require heaters, and coldwater fish, which require coolers, and there are light-needing corals and light-avoiding fish, but you never have to e.g., add tannins to a tank to make it suitable for fish that want blackwater conditions, or saltwater/brackish/freshwater fish that require certain salt levels

anything to do with water flow. you can’t pump water from a heavily-populated tank into a heavily-planted tank to increase the water quality; if you hook several tanks up to the same set of filters they just evenly split the filter values.

so like the level of 'simulation depth’ there is very shallow; you’re basically just placing mostly-inert fish-objects together with wholly-inert decoration-objects. aquariums can be better, by the metrics of the game, but they can't really be different. there's not a lot of room for personal judgement and design, because the rating metrics are so tight and the design space is so small. all the complex mechanical interactions are about controlling customer flow. so it’s less a game about fish simulation and more a directing-people simulator with some fish-themed objects

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[boudreauxh]

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[thecheshirerat]

I have more tropical fish experience than goldfish experience but what I do know is that a) You're going to want to get at least a 29 gallon tank--I know it sounds huge but even a single goldfish needs that much space to stay healthy, they can get very very large and they're super prone to ammonia buildup in the water, and if you think you ever want to get Amber a friend, it's +10 gallons for every goldfish past the first one. b) Goldfish are coldwater fish! You don't need a heater like you do for tropical fish but you DO need a filter (again: ammonia). Don't bother paying for a starter kit bc that will come w a heater you dont need, buy the tank and filter separately. (Also I recommend looking for used tanks on Craigslist or whatever, can b much cheaper than new, just make sure it's actually water-safe and not a terrarium. Filter should b bought new, though.) A 30 gallon tank needs a filter w around a 120 gallon per hour flow rate, filters are usually marked for a tank size. Ppl at the store can tell u how to cycle the tank before putting her in it. c) In the meantime, to avoid ammonia buildup, you kinda have to be the filter yourself, so do a 50% water change at least every other day in the vase. The big tank will need water changes too, but only ~10% every other week and a 30% change every couple months or so if u have a good filter. Good luck to you and to Amber! -fish

A lot of this is sounding about right, which is probably a good sign! Thanks for the advice :)

[joanielorraine]

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[the-world-of-fishkeeping]

The Optimal Temperature for a Fish Tank - Ensuring a Healthy Aquatic Environment

Maintaining the ideal temperature in a fish tank is vital for the health and well-being of its inhabitants. Fish are ectothermic creatures, meaning they rely on the environment to regulate their body temperature. As responsible fish keepers, it is our duty to provide the optimal temperature conditions that mimic their natural habitats. In this article, we will delve into the importance of maintaining the right water temperature in a fish tank and explore the optimal temperature range for various types of fish.

Understanding the Significance of Water Temperature

Water temperature plays a crucial role in the overall health, growth, and behavior of fish. Different species have varying temperature requirements, and even slight deviations from their preferred range can have adverse effects on their physiology. Here are some key reasons why maintaining the optimal water temperature is essential:

Metabolism and Digestion: Fish are cold-blooded animals, meaning their body temperature is determined by their environment. The metabolic rate and digestion of fish are directly influenced by water temperature. The right temperature promotes efficient digestion, nutrient absorption, and overall metabolic functions.

Oxygen Levels: Water temperature affects the solubility of oxygen, with colder water holding more dissolved oxygen than warmer water. By maintaining an optimal temperature, you ensure that the fish have access to an adequate oxygen supply, crucial for their survival and activity.

Disease Prevention: Consistently maintaining the optimal temperature range can help prevent the onset of diseases in fish. Fluctuations or extremes in temperature can weaken their immune systems, making them more susceptible to infections and stress-related illnesses.

Reproduction and Growth: For many fish species, temperature variations are closely linked to their reproductive behavior and growth rates. A stable and appropriate temperature range encourages spawning, hatching, and the healthy development of fry.

Optimal Temperature Range for Different Fish

It's important to note that different fish species have evolved in various aquatic ecosystems with specific temperature requirements. While this article provides a general overview, it is always advisable to research and consult species-specific guidelines for precise temperature recommendations. Here are some common temperature ranges for popular aquarium fish:

Tropical Freshwater Fish: Most tropical freshwater fish thrive within a temperature range of 75°F to 80°F (24°C to 27°C). This includes popular species like guppies, tetras, angelfish, and mollies. However, some specific species may have slightly different requirements, so researching their natural habitat is crucial.

Coldwater Fish: Coldwater fish, such as goldfish and koi, prefer temperatures between 65°F to 75°F (18°C to 24°C). They can tolerate cooler temperatures but are sensitive to sudden temperature fluctuations. Extreme temperatures can stress coldwater fish and lead to health issues.

Marine Fish: Marine fish species have diverse temperature preferences depending on their origin. Generally, the optimal range for marine aquariums is between 74°F to 82°F (23°C to 28°C). However, it is crucial to research the specific requirements of each species, as some tropical marine fish may require higher temperatures.

Betta Fish: Betta fish, also known as Siamese fighting fish, thrive in warmer water. The ideal temperature for bettas ranges from 76°F to 82°F (24°C to 28°C). Maintaining consistent warmth is essential to their overall health and vibrant colors.

Maintaining the Optimal Temperature

To ensure the optimal temperature for your fish, consider the following guidelines:

Use a Reliable Aquarium Heater: Investing in a high-quality aquarium heater with a built-in thermostat is crucial for temperature control. This allows you to set and maintain a consistent temperature within the desired range.

Regular Monitoring: Use an accurate and reliable thermometer to regularly monitor the water temperature. Check it multiple times a day initially to ensure stability and adjust the heater accordingly.

Avoid Temperature Fluctuations: Sudden temperature changes can shock and stress fish. Keep the fish tank away from drafts, direct sunlight, and heat sources like radiators or air conditioning vents to prevent sudden temperature fluctuations.

Research and Adapt: Before introducing new fish species to your aquarium, research their specific temperature requirements. Make any necessary adjustments to the overall tank temperature to accommodate the needs of the new inhabitants.

Maintaining the optimal temperature in a fish tank is a crucial factor in providing a healthy and thriving aquatic environment. By understanding the specific temperature requirements of your fish species, you can ensure their well-being, growth, and reproductive success. Regular monitoring, investing in tropical fish tank for sale, and adjusting as needed will help create a stable and comfortable habitat for your aquatic companions. Remember, a well-maintained temperature is just one aspect of overall aquarium care, and providing clean water, proper filtration, and appropriate nutrition are equally important for the well-being of your fish.

[aquariuminfobureau]

In past days, it was possible to obtain, at least for aquarists in the UK, at least two species of bitterling, Bitterling, which are cyprinids of the genus Rhodeus, are of interest for their fascinating life cycle, one that is based on depositing its eggs within a freshwater mussel, as a protected environment for the growth of its offspring. Sadly the bivalve is difficult to care for in aquaria, and almost always dies. So it is very difficult to breed bitterlings in the home aquarium, and it should not be attempted by those unable to respect and care for the mussel, that must live with the breeding fish. Bitterling possess a very large, tubular ovipositor, for the purpose of positioning their eggs inside the living mussel. Indeed the size of this structure, relative to the length of the bitterling, is visually striking.

One of the species traded, was R. ocellatus, the rosy species from East Asia. In fact the species once had a much smaller range, for it was once restricted entirely to the island of Taiwan. Centuries ago, this species was introduced to mainland China, as well as Korea and Japan. Since those days, populations have invasively colonised quite far flung locations, but the latitudinal range of this species in Asia, ought to inform us as to its tolerances. For it is established in Beijing just as it is in Hong Kong, although the latitude of Beijing suffers far more severe winters.

Rosy bitterlings are common in vegetated farm ponds and irrigation channels, and they grow to around 9 centimeters, or under 4 inches long. These species display sexual dimorphism, with the females growing to only a mere 2/3 of the length of their male counterparts. Originally this species preferred lakes, natural ponds, and sufficiently slow moving rivers. But now it is quite synanthropic, and is considered a nuisance on fish farms, where they are believed to compete with the juveniles of the cultivated species.

Rosy bitterlings appreciate a rather neutral pH, and a temperture range suited for a warm temperate to subtropical fish. 28 degrees centigrade might be regarded as a good upper limit duriǹg the summer season, dropping to a few degrees below zero, in the wintertime. Although this fish has become established long ago, in some regions where the winter air temperature is often below freezing, most of its populations do not. And it is unnecessary to expose this fish, to such low winter temperatures. Although a winter drop in temperature, is natural for these bitterlings.

When intending to accommodate R. ocellatus, their aquarium should be well planted, and the provided substrate fine, to reflect their natural habitat. Other peaceful fish can cohabit with bitterlings, although they will need to share its requirements as a non-tropical species. Like a great many cyprinids, R. ocellatus naturally form schools with their conspecifics. Their diet is recorded in the wild, to be omnivorous with a vegetarian tilt, including both algal and small arthropod components, but diatoms are their primary food source in the wild.

[plaguedocboi]

hello i have suddenly fell in love with leeches, i read your faq and you said they come on land sometimes. do you think they would appreciate some land in their tank?? or like a stick to crawl up and out??? and do you think theyd be okay with a sponge filter? i want to give them an Amazing Tank

also- my place does not have AC, and regularly gets in the 80°s (f) in the summer, will they be okay? or should i get a tank cooler? i currently only have tropical fish, so Coldwater Creature is new territory,,,

thank u,,,

They’re pretty content being mostly in the water, and if you have multiple leeches they will almost definitely use the land area to lay eggs. Unless you’re planning to breed them, I’d recommend an aquarium setup with some decorations near the surface that they can climb around on.

Filters aren’t necessary for leech tanks but as long as you’ve ensured they can’t squish inside and get stuck it probably wouldn’t hurt.

European leeches prefer more temperate conditions so yeah, you may want a tank cooler. I’ve also seen people freeze water bottles and put that in the tank as a free alternative to a cooler.

[vnvyb]

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[archcacao]

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[robynonposh]

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[cathyellisonacosta]

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