I have a gallon tank what fish can live in it?

Answer 1

Depending on weather or not you have filtration will be the key to your answer. If you do not have filtration on a 1 gallon tank, a Betta will be the only acceptable fish to place in your tank. Although many people have given several different kinds of fish from goldfish to Molly's alive and happy without filtration, it is definitely not recommended. Also you will want to change your Betta's water on a regular basis with treated tap water or R/O water. If you do have filtration on your tank, here is the best answer. 2 inches of ADULT fish per gallon. So you do not want to have more than 2 inches of adult fish. One 2 inch goldfish would be all you should keep BUT 4 or 5 Neon Tetra's,or 3 or 4 Glowfish would equal about 2 inches. You cant just go by the length because some fish have larger bodies and thus creating more waste. Hope this helped you out !!