Dictionary
feath•er•back
Pronunciation: (fe&thslash;'ur-bak"), [key]—
n.
any freshwater fish of the family Notopteridae, of Asia and western Africa, having a small, feathery dorsal fin and a very long anal fin extending from close behind the head to the tip of the tail.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.