This 3 gallon fish tank kit is only suitable for keeping Tetras.

For the beginner aquarists, a 3 gallon fish tank will be the right start.
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3 gallon tank, the best things to put here are shrimp, i wouldnt get fish since it will be hard to take care of requiring daily water changes and high awareness. 2 gallon tank and shrimp can work as well. You can successfully breed shrimp in a tank this small, with a mossy shrimp bed you can watch the little baby shrimp grow up and maybe feed them to your main tank or sell them to your lfs. I wouldnt suggest a betta, in a tank of this size they can be classified as "boring"
This Back to the Roots AquaFarm 3 Gallon Fish Tank is self-cleaning and grows food.
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I am interested in setting up a small 2-3 gallon fish tank on my desk. Which species of fish would be most suitable for such a small sized tank? How many fishes can live in a 2-3 gallon tank (and how big)? This Back to the Roots AquaFarm 3 Gallon Fish Tank is self-cleaning and grows food.
Photo provided by FlickrThis Back to the Roots AquaFarm 3 Gallon Fish Tank is self-cleaning and grows food.
Photo provided by FlickrThis Back to the Roots AquaFarm 3 Gallon Fish Tank is self-cleaning and grows food.
Photo provided by Flickr
Our coworker, who has a 40-gallon tank, gave us a 3-gallon tank with a filter, heater, round rocks, shelter, etc. after she found out that our six-year-old wanted to get some fish.Small fish tank kits (2.5-3 gallons) are often chosen by starters for their first Betta fish tanks because these are the minimum tank sizes recommended for one male Betta happy and healthy. Betta fish are commonly easy to care for, a gentle filter and a small heater are everything you need to establish an ideal environment for them. Known that, what we do in this review is covering some of the best Betta fish tanks and aquarium kits for sale that can help one male Betta live a long and happy life. If you want to keep your Betta along with his tank mates, a or will provide a larger house for the fish.sean Personally, I prefer Bettas, Peppered Cory Catfish(I have had one survive in a 2.5 gallon bowl for 9 years going strong and still alive), Dwarf Aquatic frog(had on in a 2.5 gallon tank for 8 years before it died) or white cloud minnows(as they are hardy as hell). I would probably stay away from neon tetras and cardinal tetras and even otos, normally they are not that hardy and would likely prove to be even less hardy in a 3 gallon tank. I just set up a 3 gallon low tech nano at work and I plan to transfer my 9 year old peppered cory into it and add a white cloud minnow and that's it. I thought of putting in a African Dwarf frog, but they shed old skin as they grow new skin and with plants and other fish, not to mention snails in there, it could lead to huge problems especially since water changes will be infrequent at best.The Tetra(R) 3i filter included in the package is an internal filter rated for aquariums up to 3 gallons. Thus, it provides just enough flow rate and filtration to keep your tank clean and the Betta happy. The design makes it easy to set up and maintain the tank. The top features a feeding hole for easy feeding of your pet fish. A setup guide is also included for even a beginner can get starting with the fish keeping hobby.They are also dirty fish, and will quickly pollute such a confined environment. That said, if you have to choose between keeping a goldfish in a bowl or a 3-gallon tank, the small tank would obviously be the better option.When you pick out a fish tank, you can also get a big one or a small one — and choosing a 3 to 5 gallon tank means you’ve picked a very small one.