Mexican Bullhead Shark
Scientific name........Heterodontus Mexicanus
Common names......Mexican horn shark, gato
The Mexican bullhead shark is one of nine species of the order
heterodontiformes family. They have a large squarish head and crest
above each eye. The two dorsal fins are large, and each carries a
defensive spine in front. The pectoral fins are also large and are
used for walking on the bottom. They have an anal fin and five gill
The maximum size of this species is approximately 2.3 feet and born
at 5.5 inches. Males mature around 1.3 to 1.6 feet and females at
The Mexican bullhead shark juveniles, all teeth are sharp and
multi-cusped, but, in adults the rear teeth are molar-like.
They are a light gray-brown to dark grey, with large black spots (
half eye diameter ). Light bar between eye ridges, one or two
indistinct blotches under eye.
Feeds on crabs and demersal fishes.
This shark is usually found singly.
East Pacific: Mexico to Columbia, probably Ecuador, and Peru. They
are found in rock, coral reefs, seamounts and sand, from close
inshore from 65 inches to 164 feet.
It lays augur-type egg cases, with long tendrils and rigid "T"
shaped spiral flanges.