Question: how many fish can you put in a 2.5 gallon tank?
Answer: A 2–1/2 gallon aquarium is a nice size for 6–8 really tiny fish such as Boraras brigittae or Brittanichthys tetras. Cherry or bee shrimps could also be kept in an aquarium such as this. Can I put 3 danios and 3 guppies together in a 5-gallon tank? Is it okay to have two plecos in a fish tank?