SciELO - Scientific Electronic Library Online

vol.51 issue2Age determination of Anisotremus interruptus (Perciformes: Haemulidae) by scale reading, in the coast of Colima, MexicoFauna extraida en la exploración del barco M/N "Vikheim" al noroeste del Caribe colombiano author indexsubject indexarticles search
Home Pagealphabetic serial listing  

Services on Demand




Related links


Revista de Biología Tropical

On-line version ISSN 0034-7744Print version ISSN 0034-7744


BUSSING, William A.  and  LAVENBERG, Robert J.. Four new species of eastern tropical Pacific jawfishes (Opistognathus: Opistognathidae). Rev. biol. trop [online]. 2003, vol.51, n.2, pp.529-550. ISSN 0034-7744.

Three of four new jawfishes described herein have sexually dimorphic jaws and dichromatic maxillary markings: O. smithvanizi, with a simple nasal cirrus, buccal pigmentation and other traits similar to members of the O. macrognathus group, is known only from Isla del Caño, a continental shelf island off southern Costa Rica; O. fossoris, with a multifid nasal cirrus, a broaddorsal membranous subopercular flap and a black spot on tips of first dorsal-fin spines lives in the Gulf of California and is a sister-species of O. galapagensis; the maxilla of O. walkeri terminates in a flexible scimitar-shaped lamina in adults of both sexes, but is longer in males, the species lacks nasal cirri and is also restricted to the Gulf of California. Opistognathus brochus is a small species with dark speckling on head and body, and several dark blotches along the dorsal fin and two bars on the tail; it is found in moderately deep water on the Costa Rican coast and Gulf of California. Opistognathus mexicanus is placed in the synonymy of O. punctatus. Opistognathus galapagensis, O. rhomaleus and O. fenmutis are recorded for the first time from Costa Rica and a description of the latter is given and an identification key and summary table are provided for all known eastern Pacific species of Opistognathus.

Keywords : New species; new records; jawfishes; Costa Rica; Gulf of California; Galapagos.

        · abstract in Spanish     · text in English


Creative Commons License All the contents of this journal, except where otherwise noted, is licensed under a Creative Commons Attribution License