''Stemonosudis macrura'' is a deep-water marine;

bathypelagic The bathypelagic zone or bathyal zone (from Greek βαθύς (bathýs), deep) is the part of the open ocean that extends from a depth of below the ocean surface. It lies between the mesopelagic above, and the abyssopelagic below. The bathypelagic ...

fish living at the depth range , member of family

Paralepididae Barracudinas are any member of the marine mesopelagic fish family Paralepididae: 50 or so extant species are found almost worldwide in deep waters. Several genera are known only from fossils dating back to the Ypresian epoch. The generic name ...

. The fish is known to distributed in Indo-Pacific and eastern Pacific Ocean from around

Point Conception State Marine Reserve Point Conception State Marine Reserve (SMR) is a marine protected area that extends offshore of Point Conception on the Gaviota Coast in Santa Barbara County, California. The SMR covers . The SMR prohibits the take of all living marine resources. ...

in California in the north to Chile in the south. The reported maximum length an unsexed male was . and it has seven to nine soft dorsal rays and 33 to 38 soft anal rays. It was first formally described in 1933 by Vilhelm Ege. It is

oviparous Oviparous animals are animals that lay their eggs, with little or no other embryonic development within the mother. This is the reproductive method of most fish, amphibians, most reptiles, and all pterosaurs, dinosaurs (including birds), and ...

with planktonic larvae.

References

Paralepididae Taxa named by Vilhelm Ege Fish described in 1933 {{Aulopiformes-stub