IUCN threat status:

Least Concern (LC)

Comprehensive Description

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  Common names: weakfish (English), corvina (English), corvina (Espanol)
Cynoscion nannus Castro-Aguirre & Arvizu-Martinez, 1976

Dwarf corvina,     Dwarf weakfish,     Deepwater weakfish

Elongate, fusiform, compressed, oval cross-section; head low, long (~ 35% of SL), pointed; eye large (25-33% of head length); mouth a little oblique, reaches to middle of pupil; front of top jaws with 1 pair of large pointed canines; no barbels or pores on chin; 8-10 lower gill rakers; preopercle smooth in adult (with 2 spines in juvenile); dorsal with long base, a small gap separating the two parts, IX-X + I, 18-21;  anal II, 8-10, small, length of base ~ snout length; pectoral fins relatively long, reaching past pelvic tip; rear margin of tail bluntly angular to rounded; scales rough on rear ¾ body, smooth in front and head, 49-59 on lateral line, 5-7 scales between lateral line and dorsal origin, lateral line scales larger than adjacent scales, and with small accessory scales; inner ½ of membranes of soft dorsal and anal fins scaled; lateral line arched at front.


Dark above, silver below; sides with undulating dark lines along scale rows; roof of mouth and gill chamber black, latter visible through side of gill covers; inner base of pectoral black.

Size: 27 cm.

Habitat: offshore, continental shelf, on bottom and midwater.

Depth: 100-815 m.

The SW and SE Gulf of California to Panama.


Creative Commons Attribution Non Commercial 3.0 (CC BY-NC 3.0)

© Shorefishes of the tropical eastern Pacific online information system. www.stri.org/sftep

Source: Shorefishes of the Tropical Eastern Pacific Online Information System

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