Ostariophysi

Ostariophysi is a clade of Actinopterygii and the second-largest superorder of fish.

The superorder is classified below:

• Series Anotophysi
  • Gonorynchiformes, about 37 species
• Series Otophysi (Euostariophysi)
  • Cypriniformes (minnows and allies), about 4,501 species (contains Cyprinidae, largest family of freshwater fishes)
  • Characiformes (characins and allies), about 2,168 species
  • Siluriformes (catfishes), about 3,813 species
  • Gymnotiformes (electric eels, American knifefishes), about 239 species (sometimes grouped under Siluriformes)