IUCN threat status:

Least Concern (LC)

Comprehensive Description

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  Common names: tonguefish (English), lengua (Espanol), lengüeta (Espanol)
Symphurus undecimplerus Munroe & Nizinski, 1990

Dark-cheek tonguefish,     Imitator tonguefish

Body highly compressed,  elongate, oval, tapers to pointed tail; small close-set eyes on left side, pupils with well developed covers; snout rounded; mouth small, curved, strongly so on blind side, short, not reaching rear of eye; margin of preoperculum concealed by skin and scales; dorsal origin ~ above upper eye; dorsal rays 97-105; anal rays 80-87; dorsal and anal fins confluent with the pointed tail fin; only left pelvic fin present, 4 rays, on body midline, joined to anal fin by delicate membrane; pectoral fins absent, represented by a fine membrane; tail with 11 rays; no lateral line; scales rough, on both sides of body; scales in longitudinal series 95-112.

Top side light to dark brown, becoming darker on rear ¼; 6-9 diffuse crossbars, many complete, most obvious in mid-body; dorsal and anal clear, last 1/3 darker than body; tail black; dark blotch on lower mid operculum; lining of gut cavity without pigment.

Size: 15 cm.

Habitat: sand and mud bottoms.

Depth: 15-55 m.

Southern Mexico to Peru.


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© 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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