fish family - any of various families of fish

Cypriniformes, order Cypriniformes - an order of animals including almost entirely freshwater fishes: characins; loaches; carp; suckers; sometimes classified as a suborder of Ostariophysi

characid, characin, characin fish - any freshwater fish of the family Characinidae

genus Hemigrammus, Hemigrammus - tetras

genus Paracheirodon, Paracheirodon - a genus of Characidae

genus Serrasalmus, Serrasalmus - piranhas