Question: can you put 2 guppies in a 1 gallon tank?
Answer: Guppies. Guppies are another great fish option to go with for a small 1 gallon tank. ... They are community fish, so being alone is not an option, but you also can't put too many in a small tank either. That being said, you should be able to put around 3 or 4 of these small guys in a 1 gallon tank without issue.