Shorefishes of the Tropical Eastern Pacific Online Information System
Updated: 06/12/2008  

Contributors | Glossary | Settings  
Home General
What Fish is That?The FishesLibraryRandom ImagesGlossaryResearch Engine

Species Information          
Book mode off
  Book mode off  
Heterodontiformes  -  Heterodontidae  -  Heterodontus  -  Heterodontus mexicanus

Heterodontus mexicanus

All Families(148) All Genera(504) All Species(1287)
eye crest ends gradually

weakly concave between eyes
pale bar between eyes

body spots > 1/2 eye
D1 origin over pectoral



Heterodontus mexicanus Taylor & Castro-Aguirre, 1972

Mexican horn shark

A slender-bodied shark with an enlarged squarish head and pig-like snout; low bony ridge above each eye that ends gradually rear; space between eyes shallowly concave; nostrils without barbels; with grooves around the nostrils and connected to the mouth; anterior nasal flaps elongate posteriorly; small mouth; front teeth with 3 similar sized points, enlarged molariform teeth posteriorly; both dorsal fins with a sharp spine; origin of first dorsal fin over pectoral fin base; skin denticles on flank large (70-130/cm2  in adults) and rough.

Grey-brown, usually with scattered large (> ½ eye diameter) black spots on fins and body; a pale bar between eyes; 1-2 indistinct dusky blotches below eye.

Size: reaches 70 cm.

Habitat: rocky to sandy bottoms.

Depth: 1-50 m.

Southern Baja and the Gulf of California to Peru.

  WoRMS FishBase Search OBIS Search
ITIS Catalog of Fishes Encyclopedia of Life

Questions or comments

Email STRI data manager

Print Friendly Version

© Copyright 2008 to 2015 - Smithsonian Tropical Research Institute
Programmed by Coeus Knowledge Systems Pty Ltd