black fish

Alaskan freshwater bony fish. It is characterized by its dorsal fin being far back and opposite its anal fin. The scales of the black fish are very small and embedded in the skin. It lives in peat bogs and small rivers. During the winter it hides in the mud, and may even survive in solid ice.

Classification The black fish Dallia pectoralis is in the order Salmoniformes, class Osteichthyes.

black fish

Widely distributed marine bony fish resembling a perch. It has small circular scales that are periodically shed. The name is also given to other varieties of dark-coloured fishes.

Classification The black fish Centrolophus niger is in the order Perciformes, class Osteichthyes.