25 rummy nose tetra tank mates aquariumnexustank mates for rummy nose tetras. so, rummy nose tetras get along well together, but what other fish species make good tank mates for them? good tank mates for rummy nose tetras. essentially, all small, schooling, or shoaling fish species make suitable tank mates for your rummy nose tetras, such as the following: corydoras catfish; danios