Crested Bigscale
Aletudo Crestada
(Poromitra crassiceps)

Crested Bigscale, Poromitra crassiceps: The Crested Bigscale has an elongated rectangular body with a serrated crest on top of the head. They are black in color with dark fins.

They have 3 dorsal spines and 11 to 14 soft rays, 1 anal spine and 8 to 11 soft rays; the caudal fin is shallow and forked and the pectoral fins are long and slender being longer than the head.

They are a bathypelagic species found in all Mexican waters of both the Atlantic and the Pacific around from the surface to 10,000 feet in the water column and vertically migrate during the night toward the surface to feed.

They reach a maximum length of 18 cm (7.1 inches) and have life spans of 9-years. They are oviparous with planktonic eggs and larvae. Adults feed on small crustaceans.

The Crested Bigscale is a member of the Melamphaidae Family of Bigscale Fishes and Ridgeheads. Globally there are 37 species from 5 genera of bigscale fishes. They are found in the Atlantic, Indian and Pacific Oceans from tropical to subarctic waters.

Crested Bigscale picture

Crested Bigscale, Poromitra crassiceps: Fish collected by H.J. Walker, Jr., Scripps Institution of Oceanography, La Jolla, Calif., in a deep water trawl net off Point Loma in August 2010. Length 8 cm (3.15 inches). Description courtesy of John Snow.