Stemonosudis macrura

Stemonosudis macrura is a species of deep-water marine, bathypelagic fish living at the depth range 18 to 330 m, member of the barracudina family Paralepididae. The fish is known to distributed in Indo-Pacific and eastern Pacific Ocean from around Point Conception State Marine Reserve in California in the north to Chile in the south.

Description
The reported maximum length an unsexed male was 15 cm. and it has seven to nine soft dorsal rays and 33 to 38 soft anal rays. It is oviparous with planktonic larvae.

Taxonomy
It was first formally described in 1933 by Vilhelm Ege.