SUPERORDER Characiphysae Fink & Fink, 1981
Knifefishes, Moonfishes, Tetras, Headstanders, Darters, Trahiras, Freshwater Hatchetfishes, Pencilfishes, African Pikes and Piranhas

ORDER Characiformes Goodrich, 1909
Lutefishes, Moonfishes, Cachorros, Freshwater Barracudas, Pike-characins, Dogtooth Characins, African Tetras, Headstanders, Tetras, Dorados, Darters, Trahiras, Freshwater Hatchetfishes, Pencilfishes and Piranhas

SUBORDER Citharinoidei Lutefishes, Moonfishes, distichodontid fishes

LUTEFISHES

Family Citharinidae

DISTICHODONTID FISHES

Family Distichodontidae

SUBORDER Characoidei

Tetras, Pike-characins, Freshwater Barracudas, Dogtooth Characins, African Tetras, Bryconids, Dorados, Headstanders, Darters, Trahiras, Freshwater Hatchetfishes, Pencilfishes, African Pikes and Piranhas

SOUTH AMERICAN DARTERS

Family Crenuchidae

AFRICAN TETRAS

Family Alestidae

AFRICAN PIKES

Family Hepsetidae

MUCKFISHES

Family Tarumaniidae

TRAHIRAS

Family Erythrinidae

DARTER TETRAS

Family Parodontidae

DOGTOOTH TETRAS

Family Cynodontidae

PIRANHAS and ALLIES

Family Serrasalmidae

HEMIODONTID PENCILFISHES

Family Hemiodontidae

HEADSTANDERS

Family Anostomidae

HEADSTANDERS

Family Chilodontidae

TOOTHLESS CHARACIDS

Family Curimatidae

FLANNEL-MOUTHED CHARACIDS

Family Prochilodontidae

PENCILFISHES

Family Lebiasinidae

PIKE CHARACIDS

Family Ctenoluciidae

CHALCEIDS

Family Chalceidae

HATCHET CHARACIDS

Family Triportheidae

FRESHWATER HATCHETFISHES

Family Gasteropelecidae

BRYCONIDS

Family Bryconidae

IGUANODECTIDS

Family Iguanodectidae