As long as you know their fundamental requirements you shouldn’t have any trouble keeping this fish. They’re quite active and friendly, so they’re always up to something. Tiger Barbs. Size: 2 inches Difficulty: Beginner Minimum Tank Size: 10-15 gallons Water Temperature: 64°F to 72°F This makes them a great fish to observe. Fish finders can be great for several applications but during the cold weather and cooler water temperatures they can be especially great for a few key reasons. As long as that’s not a problem, give them a shot! But wow are they pretty! Hillstream loach (Balitoridae) They are a small and unusual fish. For such a unique animal, the Axolotl is actually quite straightforward to keep. This gives you a lot of flexibility when it comes to the kind of habitat you want to keep them in. The Bristlenose Pleco has a very interesting look that can’t be ignored. Bettas are an example of a very popular fish that requires tropical temperatures towards the upper end of the scale. Coldwater fish, in the context of aquariums, refers to fish species that do not require a heater to remain within tolerable temperatures in a typical indoor aquarium. A group of these moving around an aquarium is something you need to see in person. Many don’t even need heaters! Some argue that this fish should technically be considered part of the killifish family or not. It is important to note that just because these fish are capable of surviving in unheated aquaria, their temperature preferences may vary. They share a lot of the same traits as other goldfish, they just look different. As far as aquarium fishes are concerned, coldwater species prefer water that is typically around or below 68° Fahrenheit. We’ve been fans of them for years and love the versatility their hardy nature provides. These tine creatures are very easy to care for and don’t need a complicated tank setup in order to thrive. We often encourage aquarists to give this species a shot since because they’re such a pleasure to own. Coldwater fish are fish species that prefer to live in cooler water temperatures than most tropical fish. These creatures spend their time in waters with very fast currents. Unlike tropical aquariums, you don't need to provide a heater for your cold water fish tank, however, it's a good idea to use a thermometer, so you can ensure it's kept at a nice comfortable, constant temperature for your fish. Endler’s Livebearers — Poecilia wingei. Fish kept in colder water do move slower, however, and it’s likely that it may affect some of their metabolic functions. By the time you’re done reading it, you’ll know which species interest you the most. This is easy to work around though. It’s recommended to keep this fish in a school, so that’s why they can’t get away with super small tanks. Mollies. https://www.thesprucepets.com/what-fish-species-are-coldwater-1380965 They are far more genetically equipped for the combats of pond life, and actually do very well in temperatures as low as 65-70 degrees F (18-21 degrees C). Fancy goldfish are a popular type of goldfish that tend to have more of an elaborate aesthetic than some of the standard variations. However, when they grow up you’ll see them start to spend more and more time on their own. This small fish is very easy to care for and is a great option for anyone looking for a species that won’t take up a lot of their time. Most of the aquarists we know keep a ton of these fish in their tank. by theaquaaddict. This species is a great choice if you’re looking for a fish that will get along with anyone. With that being said, they can show a little bit of aggression when put in the wrong situation (or with the wrong tank mates). They really don’t care! They can also cope with winter way better, and it actually seems to do them quite a bit of good to go through winter. Suggested Water Temperature: 65 to 80°F … They’re a species that not many people pay attention to, but that’s something we’ve never understood. The Pygmy Sunfish is a very pretty species that’s one of the best fish for cold water aquariums. Caring for these fish is something that anyone can do. This behavior is quite interesting to watch, so if you’re a breeder you might be in for a treat! When the water temperature falls below 50-55°F, it is classified as been too cold for the goldfish. Goldfish, for instance, are considered COOL water fish and prefer temperatures in the 60 degree range. The Celestial Pearl Danio is a gorgeous species that many aquarists love. You can also breed them if that’s something you’re interested in as an owner. These fish most likely died from lack of oxygen before becoming lodged in ice. They will show some situational aggressiveness from time to time, but that’s not very common behavior. After all, most of the common freshwater fish need one! The funny thing is not many people know about this fish (even the ones that want to keep fish without a heater). This fish can brighten up even the dimmest tank with its vibrant yellow. If you’re considering getting some cold water fish for your aquarium, you have a lot of options. Not only is this what they’re used to in the wild, but the green vegetation really makes their colors pop! It can be hard to spot them at times! This is one of the most popular species in the freshwater aquarium community as a whole, and they make great cold water fish. Due to high demand, Gold Barbs can be a little tricky to get your hands on! Part of what makes the Asian Stone Catfish so adorable is their tiny size. You can keep them in a variety of different habitats without any issues as well. One of the reasons these fish are so popular is their versatility. In fact, there’s still some debate about their ideal water parameters! Some of them are quite popular, and others are under the radar. With their cool flat built, this fish will stand out among almost any other species. Fancy Goldfish (Carassius Auratus) Maximum Size: 8 inches. This part is obvious but there are variables in water temperature that is related more to weather than the actual warming hours of the sun. The fish tank water that is either too cold or too hot can also cause some health problems for the fish. They’re a very mellow and easygoing fish that is compatible with plenty of other species as well. As you can see, they can thrive in a wide range of water temperatures. They’re very peaceful as well which allows you to match them with a variety of other species. They are schooling fish and should have at least six in their shoal. Sunset Variatus Platy. We recommend this species to other aquarists all the time. As long as you give them some variety in their diet and provide a solid habitat, Odessa Barbs will be quite happy. These fish are fairly low maintenance, active, and peaceful. These fish are often compared to Neon Tetras since they look rather similar. Breeding can be stimulated in mature fish by a rise in temperature to 80° – 82°F combined with a partial water change. If so, and as such the water in the winter gets cold or even freezes, you’ll have to bring the pleco indoors or it will become ill and could die. In case you want them to be kept in … They’re great for anyone looking for cold water fish but are a strong choice in general. Another common name for them is the Mexican Walking Fish because of the way they move around the water. This species is not found in very many tanks. “ Cold- and warm-water fish species have different temperature preferences and tolerances. These fish are best for well-planted aquariums. These fish are very hardy and can thrive in a variety of different conditions. They’re addicting to watch swim around in the tank. Source. For example, koi and goldfish are commonly considered to be cold-water fish because of their ability to survive at very low temperatures, but their temperature preferences are 32°C (89.6°F)[1] and 28°C (82.4°F),[2] respectively. They share a lot of the same colors and have a thin but chunky looking caudal peduncle. While there are some elements of their care you’ll need to familiarize yourself with, they’re not very difficult to keep. As you can see, there are a number of fish that can thrive in cold water aquariums. These little critters are one of our favorite freshwater catfish species to keep in cold tanks. In it, you’ll find information about all the best fish for cold water tanks. This is quite a popular fish because of its unique look and ease of care. I can't think of any common aquarium COLD water fish off hand. Their bodies are very textured and they almost look like they’ve been rendered by a bunch of polygons. But hey, the more, the merrier, right? First, they can locate the good cover spots beneath the water surface such as rock ledges or fallen logs. Due to the fact that the population of this species is in crisis, it’s important to be absolutely sure before you get one. Odessa barbs are often overlooked by freshwater aquarists. You can put them in almost any tank, with almost any other species. This really makes their beauty worth it! Paradise Fish have mesmerized aquarists for years with their bright colors and flowing tails (us included). This is a species that’s mesmerizing to look at. The One-Sided Livebearer is a simple, yet elegant fish that can thrive in low temperatures. There are many different types of aquarium catfish out there. SIZE 3 in (8… As long as you take the time to understand their main care requirements and how to set up their habitat, you should be just fine. 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