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| Common names: guitarfish (English), guitarra (Espanol) |
Rhinobatos planiceps Garman, 1880
Pacific guitarfish, Flathead guitarfish
Body shark-like; snout long, pointed, with 2 narrow central cartilaginous crests that are close together for front 1/3-1/2 their length; spiracle smaller than eye, with 1 rudimentary fold in rear border; 2 equal-sized dorsal fins; tail without lower lobe, convex below, with prominent skin fold along each side; body surface like sand-paper; a row of small tubercles (better developed in juveniles) along midline of back, in 2 groups on each shoulder, and several around eyes and spiracles; small juveniles with spines along each rostral ridge.
Upper surface olive, brown or grey, white below; snout pale brown, light between and on each side of the snout ridges; may have 5 pairs of dark blotches along back and base of tail; young may have a few small round white spots on back.
Size: 77 cm.
Habitat: shallow soft bottoms.
Depth: 0-50 m.
Southern Mexico to Chile, rarely at Cocos and the Galapagos.