What Kind Of Small Fish Get Along With Tetras. You can mix and match them with pretty much any other fish on this list with great results! This is why it is better to get fish that are okay with being solitary as opposed to schooling fish, because smaller tanks cannot support the kind of environment some fish instinctively need.
Larger tetras are usually peaceful and enjoy having other tetras around. Adding any fish larger than that is like throwing your glofish tetras under the bus. Some aquarists have also successfully kept mollies with swordtails, platies, and betta fish.