Ilypnus gilberti (Eigenmann and Eigenmann, 1889)
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Ilypnus gilberti
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Ilypnus gilberti

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Main identification features
  • slender, compressed
  • 1st dorsal fin : v d: red + white border
  • opercle - black blotchchin - black
  • shoulder- 1 skin flap
  • a: black stripe
Slender, compressed; ridge over eye expanded at rear; tongue tip in 2 lobes; mouth slightly oblique, short, ends under mid-eye; shoulder girdle in front of pectoral fin base with 1 (rarely 2) skin flap; dorsal with IV-VI (usually V) spines, 1st spine sometimes a little prolonged; 2nd dorsal 15-17 rays; anal 14-16 rays; scales tiny, smooth, imbedded in skin, moderately overlapping in large individuals, absent before dorsal fin, on throat or base of pectoral.

Color: Light tan; under head with black stripe; bright white patches at upper corner of mouth and chin tip; sides of body peppered with fine dark dots: an iridescent blue-black blotch on gill cover; anal fin with central broad black stripe; dorsal fins red-brown with white margin, each ray with black dots that form several stripes; tail fin rust colored above and below, with grey center and white margin, and about 5 wavy brown bars in center; lower rays of pectoral fin and edges of median fins bright white.

Size: reaches 6.4 cm.

Habitat: intertidal sand bottoms in bays and estuaries.

Depth: 0-7 m.

Northern California to Baja and the western and northeastern Gulf of California.

Abundance: Common.
Cites: Not listed.
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap).
Depth Range Max: 7 m.
Depth Range Min: 0 m.
Diet: mobile benthic worms; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=38; Southern limit=24; Western limit=-123; Eastern limit=-109; Latitudinal range=14; Longitudinal range=14.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: TEP non-endemic; East Pacific endemic; All species.
Habitat: Estuary; Sand & gravel; Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 6.4 cm.
Regional Endemism: Continent only; Continent; Temperate Eastern Pacific, primarily; California province, primarily; Tropical Eastern Pacific (TEP) non-endemic; All species.
Residency: Resident.
Salinity: Brackish; Marine.
Water Column Position: Bottom; Bottom only;

Scientific source:

Links to other sites

  • De la Cruz , J. , Galvan , F. , Abitia , L. A. , Rodriguez , J. and Gutierrez, F. J., 1994., Lista sistematica de los peces marinos de Bahia Magdalena, Baja California Sur (Mexico). Systematic List of marine fishes from Bahia Magdalena, Baja California Sur (Mexico)., Ciencias Marinas, 20:17-31.
  • Eigenmann , C.H. and Eigenmann, R.S., 1889., Notes on some California fishes, with descriptions of two new species., Proc. U.S. Nat. Mus., 11:463-466.
  • Eschmeyer , W. N. , Herald , E. S. and Hamman, H., 1983., A field guide to Pacific coast fishes of North America from the Gulf of Alaska to Baja California. Peterson Field Guide Ser. 28., Houghton Mifflin:336pp.
  • Findley, L.T., Hendrickx, M.E., Brusca, R.C., van der Heiden, A.M., Hastings, P.A., Torre, J., 2003., Diversidad de la Macrofauna Marina del Golfo de California, Mexico., CD-ROM versión 1.0. Projecto de la Macrofauna del Golfo .  Derechos reservados de los autores y Conservación Internacional.
  • Galván-Magaña, F., Gutiérrez-Sánchez, F., Abitia-Cárdenas, L.A., Rodríguez-Romero, J., 2000., The distribution and affinities of the shore fishes of the Baja California Sur lagoons. In Aquatic Ecosystems of Mexico: Status and Scope. Eds. M. Manuwar, S.G. Lawrence, I.F. Manuwar & D.F. Malley. Ecovision World Monograph Series., Backhuys Publishers:383-398.
  • Jordan , D.S. and Evermann, B.W., 1896., The fishes of North and Middle America: a descriptive catalogue of the species of fish-like vertebrates found in the waters of North America, north of the Isthmus of Panama. Part I., Bull. U.S. Nat. Mus., 47:1-1240.
  • Love, M.S., Mecklenburg, C.W., Mecklenburg, T.A., Thorsteinson, L.K., 2005., es of the West Coast and Alaska: a checklist of North Pacific and Artic Ocena species from Baja California to the Alaska-Yukon border., U.S. Department of the Interior, U.S. Geological Survey, Biological Resources Division, 288pp.


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