P poop R New member Oct 5, 2009 #1 i want a cool extremely vicious fish that i can put in a 20 gallon tank. i was going to get buck tooth tetras but i cant get a good group in a 20 gallon. what is one that is the most aggressive that can live in a 20 gallon? it also has to be cool.
i want a cool extremely vicious fish that i can put in a 20 gallon tank. i was going to get buck tooth tetras but i cant get a good group in a 20 gallon. what is one that is the most aggressive that can live in a 20 gallon? it also has to be cool.
