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Genus: Canthigaster, Sharpnose Puffer, Tobies


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nostrils = 1 pair holes
skin ridge along nape

CANTHIGASTER

SHARPNOSE PUFFER, TOBIES

Robust, slightly compressed, inflatable body; head large, blunt; snout long and pointed; 1 pair of small hole-like nostrils; nape with crest between eyes and dorsal fin; eyes high on sides of head; jaws are a small beak composed of 4 fused heavy powerful teeth with a central suture on each jaw; a slit-like gill opening in front of the pectoral fin base; a single short- based dorsal fin at rear of body; a similar-shaped anal fin below the dorsal; no pelvic fins; no spines in the fins; tail fin rounded to bluntly straight, with 10 main rays; tough scaleless skin, head and body with scattered tiny spinules, no fleshy skin flaps.

A circumtropical genus with 33 species; 1 endemic plus 3 Indo-Pacific species recorded as vagrants in the tropical eastern Pacific.