Enoplosus armatus
Double back -finned fishes ( Enoplosus armatus )
The double back -finned fishes ( Enoplosus armatus ) is a species of perch relatives ( Percomorphaceae ). The fish lives endemic to the coast of southern Australia, where he is known as " Old Wife". It is monotypic in its genus and family Enoplosidae.
Features
Double back -finned fishes have a high-backed body with a relatively small head, a slightly above- permanent, pointed muzzle and a two-part dorsal fin with strong fin rays. The first dorsal fin is supported by eight hard jets, the second from a hard - and 14 to 15 soft rays. The anal fin of three hard - and 14 to 15 soft rays. The ventral fins stand out are large and have a strong first fin ray. Double back -finned fishes are silvery color and carry more vertical, different width stripes on flanks, fins and head. You have 26 vertebrae and up to 50 inches long.
Way of life
Double back -finned fishes live in small flocks, in pairs or individually over rock reefs and seagrass beds to depths of 90 meters. Not yet fully grown fish live in estuaries. The fish feed on crustaceans, worms and algae.
Fossil record
A fossil relative, Enoplosus pygopterus is from the Middle Eocene of northern Italy Monte Bolca Formation, which originated from deposits of the Tethys known.