Protacanthopterygii

Procanthopterygii is a superorder of teleost fishes. These fish mostly live in temperate waters, and in the northern hemisphere. They may live in both fresh and salt water.

Protacanthopterygii
Ayu (Plecoglossus altivelis: Osmeriformes) in Kawasaki (Kanagawa Prefecture, Japan)
Scientific classification
Kingdom:	Animalia
Phylum:	Chordata
Superclass:	Osteichthyes
Class:	Actinopterygii
Subclass:	Neopterygii
Infraclass:	Teleostei
Superorder:	Protacanthopterygii
Orders
Argentiniformes Esociformes Galaxiiformes Salmoniformes Osmeriformes? Stomiiformes?

Best-known examples of this group are the salmon, trout, and pikes.

The main groups are:

• Argentiniformes
• Esociformes
• Osmeriformes
• Salmoniformes