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Bollmannia ocellata Gilbert, 1892
Life   Vertebrata   Fish   Gobiidae   Bollmannia

Bollmannia ocellata
© Copyright Ross Robertson, 2006 · 12
Bollmannia ocellata

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Main identification features
  • 1st dorsal fin : dark spot at rear base; spines very long
  • c: lower 1/2 dark,base without spot,
  • top lip: no black line
  • throat, pelvic y a: black
Head large, (>1/4 of standard length); eye (7-10% of standard length); tail base relatively deep (least depth 9-14% of standard length); dorsal fin VII + I, 14 (occasionally 13) rays, anal with 14 (13-15) rays; last rays of dorsal and anal reach past tail fin base; 4th &5th spines of dorsal very long and filamentous, reaching to or beyond tail fin base; pectorals 22-26 rays, reaching past origin of anal fin; pelvics reaching anus; tail fin pointed, long ( 1/2 standard length); scales large, rough, 24-28 in lateral series, 6-9 before dorsal fin, 1 large + several small on pectoral base; 1 large + several small on upper opercle; several medium sized on upper preopercle & 1 large + 1-2 small ones on lower preopercle.

Body grey-brown with 2 rows of irregular orange blotches; head with orange spots and lines; no dark line along top lip; 1 dark spot with clear margin covering base of last 3 dorsal fin spines; gill membranes, pelvic, anal and lower 1/2 of tail fin black; pectoral and dorsal fins dusky; no black spot at base of tail fin.

Size: to 14 cm.

Habitat: muddy sand bottoms.

Depth: 15-120 m.

The Gulf of California to Colombia.

Abundance: Common.
Cites: Not listed.
Climate Zone: North Temperate (Californian Province &/or Northern Gulf of California); Northern Subtropical (Cortez Province + Sinaloan Gap); Northern Tropical (Mexican Province to Nicaragua + Revillagigedos); Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 120 m.
Depth Range Min: 15 m.
Diet: mobile benthic crustacea (shrimps/crabs); mobile benthic worms.
Eastern Pacific Range: Northern limit=32; Southern limit=5; Western limit=-115; Eastern limit=-78; Latitudinal range=27; Longitudinal range=37.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore; Planktivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Mud; 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: 14 cm.
Regional Endemism: Continent; Continent only; TEP endemic; Continental TEP endemic; 3 provinces (Cortez + Mexican + Panamic) endemic; All species.
Residency: Resident.
Salinity: Marine; Marine Only.
Water Column Position: Bottom; Bottom only;

Scientific source:

Links to other sites

  • Bedenbaugh, R. L., 1988., A review of the Pacific members of the gobiid fish genus Bollmannia Jordan., Old Dominion University:1-56.
  • 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.
  • Fischer , W. , Krup , F. , Schneider , W. , Sommer , C. , Carpenter , K. E. and Niem, V. H., 1995., Guia FAO para la Identificacion de Especies de para los fines de la Pesca. Pacifico Centro-Oriental. Volumen II. Vertebrados - Parte 1., FAO2:647-1200.
  • Gilbert, C.H., 1892., Scientific results of explorations by the U. S. Fish Commission steamer "Albatross." 22. Descriptions of thirty-four new species of fishes collected in 1888 and 1889, principally among the Santa Barbara Islands and in the Gulf of California., Proc. U.S. Nat. Mus., 14:539-566.
  • Ginsburg, I., 1939., Twenty-one new American gobies., J. Wash. Acad.Sci., 29(2):51-63.
  • Jordan , D.S. and Evermann, B.W., 1898., 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 III., Bull. U.S. Nat. Mus., 47:2183-3136.


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