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Gobiosoma homochroma (Ginsburg, 1939)
PLAIN GOBY
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Gobiosoma homochroma
© Copyright Photographer/SFTEP, 2002 · 0
Gobiosoma homochroma

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Gobiosoma homochroma
© Copyright Photographer/SFTEP, 2002 · 0
Gobiosoma homochroma
espa˝ol

Overview
Main identification features
  • head depressed, snout long; eye small
  • body: tan, faint bars
  • barbel: only front nostril
Head distinctly depressed; snout long, sloping forward; mouth oblique, long, reaching to rear edge or past rear of eye; no barbels under chin; a small barbel below each front nostril; eye small (~63% of snout length); preopercle with 2-3 pores; dorsal VII spines (none filamentous), 10-12 (usually 11) rays, without elongate spines; anal 10 rays; 19-20 pectoral rays; pelvics fused in disc; male genital papilla slender; female genital papilla with rounded tip; body completely scaled behind level of 2nd ray of 2nd dorsal, with narrowing extension forwards to inner base of pectoral; scales large, rough; 6 large, rough (but not with long spines); scales on base of tail fin; 27 lateral scales.

(Preserved fish) Uniformly tan, with faint bars on top of back.

Size: 3.2 cm.

Habitat: fresh and brackish water?.

Depth: 0-5 m.

Pacific entrance to Panama Canal.


Attributes
Abundance: Common.
Cites: Not listed.
Climate Zone: Equatorial (Costa Rica to Ecuador + Galapagos, Clipperton, Cocos, Malpelo).
Depth Range Max: 5 m.
Depth Range Min: 0 m.
Diet: mobile benthic worms; mobile benthic crustacea (shrimps/crabs); mobile benthic gastropods/bivalves.
Eastern Pacific Range: Northern limit=9; Southern limit=9; Western limit=-80; Eastern limit=-79; Latitudinal range=1; Longitudinal range=1.
Egg Type: Benthic; Pelagic larva.
Feeding Group: Carnivore.
FishBase Habitat: Demersal.
Global Endemism: Tropical Eastern Pacific (TEP) endemic; East Pacific endemic; All species.
Habitat: Soft bottom (mud, sand,gravel, beach, estuary & mangrove); Soft bottom only; Sand & gravel; Freshwater.
Inshore Offshore: Inshore; Inshore Only.
IUCN Red List: Not evaluated / Listed.
Length Max: 3.2 cm.
Regional Endemism: Continent only; Continent; TEP endemic; Continental TEP endemic; Panamic province endemic; All species.
Residency: Resident.
Salinity: Brackish; Freshwater; Non Marine.
Water Column Position: Bottom; Bottom only;


Names
Scientific source:

Links to other sites

References
  • B÷hlke , J.E and Robins, C.R., 1968., Western Atlantic seven-spined gobies, with descriptions of ten new species and a new genus, and comments on Pacific relatives., Proc. Acad. Nat. Sci. Phila., 120(3):45-174.
  • Ginsburg, I., 1939., Twenty-one new American gobies., J. Wash. Acad.Sci., 29(2):51-63.
  • Hoese, D.F., 1971., A revision of the eastern Pacific species of the gobiid fish genus Gobiosoma, with a discussion of the relationships of the genus. Ph.D. diss. Univ. California, San Diego., University of California:213pp.
  • Lopez , M. I. and Bussing, W. A., 1982., Lista provisional de los peces marinos de la Costa Rica., Revista de Biologia Tropical, 30(1):5-26.

Acknowledgements

I thank Ashley MacDonald and John Pickering, University of Georgia, for technical support in building this page.


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