| Common names: razorfish (English), cuchillo (Espanol) |
Xyrichtys mundiceps Gill, 1862
Cape razorfish, Gulf razorfish
Head and body strongly compressed; head profile steep, with a fleshy longitudinal keel at front; head large (head depth ~ 83% head length, head length 25% of TL); eye on upper ½ of head; both jaws with canines at front, lower jaw without rear canine tooth; dorsal fin continuous, IX, 11, spines regularly spaced, origin over middle of operculum, height of fin gradually increasing to middle of soft part; anal III,10, origin under last dorsal spine, ~ uniform height; pectoral reaches to line through anus; pelvic strongly pointed, with first ray elongate; tail slightly convex; lateral line in 2 sections, rear section on tail base, 19 + 5 pored scales; head scaleless except for few scales below eye.
Female uniform pale brown. Male darker brown, with a narrow blue and violet vertical line on each scale, most distinct and broadest on tail base; a conspicuous black spot (larger than eye) at base of tail just above lateral line; three concentric blue lines on outer part of operculum, three narrow blue lines running down and forward from eye across cheek; lower jaw and lower side of head with blue stripes and lines, the one connecting angles of mouth broader than the others, fins pale.
Size: 15.9 cm.
Habitat: benthic on fine sand.
Depth: 5-27 m.
Central Gulf of California to central Mexico.
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