Tuna

• Basses
• One of the largest natural groups of fishes of both marine and fresh water true perches

Wikipedia Word definitions in Wikipedia
Perciformes , also called the Percomorphi or Acanthopteri, are the largest order of vertebrates , containing about 41% of all bony fish . Perciformes means " perch -like". They belong to the class of ray-finned fish , and comprise over 10,000 species found ...

The Collaborative International Dictionary Word definitions in The Collaborative International Dictionary
Perciformes \Per`ci*for"mes\, n. pl. [NL.] (Zo["o]l.) An extensive tribe or suborder of fishes, including the true perches ( Percid[ae] ); the pondfishes ( Centrarchid[ae] ); the sci[ae]noids ( Sci[ae]nid[ae] ); the sparoids ( Sparid[ae] ); the serranoids ...