Comprehensive DescriptionRead full entry
| Common names: sea-catfish (English), congo (Espanol) |
Cathorops hypophthalmus (Steindachner, 1877)
Body elongate; head narrow and flattened; eye position relatively low, opposite corner of mouth; top of head rough at rear, covered with thin skin; a long, narrow groove along top of head, deeper at rear; bone between head shield and base of dorsal fin triangular, with relatively long and narrow tip; 3 pairs of barbells (on chin and both jaws), top barbel long (reaches as far as dorsal fin); lips thin and ruffled; jaws thin, with fine teeth, in several rows, front teeth smaller than back; a small, narrow oval patch of teeth on each side of palate, on each patch inner teeth are molariform, outer teeth conical; gill opening restricted to sides by adhesion of gill membranes to breast; gill rakers 37-40, rakers present on posterior surface of all arches; dorsal fin high, I, 7; anal rays 21-23; pectoral rays I, 10-11.
Back and upper side bluish or brown, sometimes with purple sheen, silvery white below; fins dusky, dorsal and caudal with darker margin.
Size: reaches 35 cm.
Inhabits brackish estuaries and fresh water.
Depth: 0-20 m.
Costa Rica and Panama.