Question: what can i put in a 1 gallon aquarium?
Answer: Betta Fish. One of the very best options that you can go with for a 1 gallon tank is the Betta fish. ...  Guppies. Guppies are another great fish option to go with for a small 1 gallon tank. ...  White Cloud Mountain Minnows. ...  Tetra Fish. ...  Goldfish.