I currently have 4 aquariums( a 2 gallon, a 10 gallon, a 20 gallon, and a 30 gallon) and i'm thinking of adding some non-fish creatures in them.In the 2 gallon i have a male betta, in the 10 gallon i have 5 cardinal tetras and 1 neon tetra,in the 20 gallon i have 4 serpae tetras, 4 red eye tetras and a BN pleco, and in the 30 gallon i have 9 tiger barbs and a red tailed shark.would any type of shrimp,aquatic frogs or snails work in any of these tanks?
