Risor ruber
Tusked Goby
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Perciformes (Perciformes, Also Called the Acanthopteri)
Gobiidae (Gobies)
Risor
Risor ruber (Tusked Goby)
Description
This species account was compiled from
Composite (multiple sources) (McEachran, J.D. and J.D. Fechhelm. Fishes of the Gulf of Mexico. University of Texas Press, Austin.)
and processed using AI-assisted text extraction.
It may contain errors in spelling, punctuation, or formatting.
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Characters
Elongated, recurved canine teeth in jaws; scales limited to posterior section of body; head abruptly elevated; snout very blunt; upper lip interrupted medially by broad frenum; mouth subterminal; upper jaw extends to or beyond pupil; specific dental arrangement; gill opening extends the length of pectoral fin base; measurements (% SL): head length 25%–30%, eye diameter 7%–9%, upper jaw length 8%–10%, pectoral fin length 23.9%–33.8%, pelvic fin length 22%–32%, body depth 18%–26%; pectoral fin rays 16 or 17; first dorsal fin has seven spines, second has one spine and 10 or 11 rays; pelvic fins united by membrane to form disc; pelvic fin spines connected by frenum; anal fin has one spine and 8 or 9 rays; caudal fin rounded with 16 or 17 rays; scales on posterior body; caudal fin base has four or five scales bearing enlarged ctenii; scales in horizontal series number 14 to 19; preopercular sensory pores absent; vertebrae number 27 or 28 (11 or 12 precaudal and 16 caudal)
Pale to dark brownish gray or blackish, often with obscure dark bars
Distribution
Western Atlantic from southern Florida and the Bahamas to Suriname, including the Gulf of Mexico
In the Gulf of Mexico: along the west coast of Florida, off Alabama, and on the Flower Garden Banks
Habitat Associations
Associated with large sponges such as loggerheads
Biology
Maximum known size is 25 mm TL
Found in association with large barrel sponges, generally along outside hiding in crevices, also sometimes within the sponge tubules (Ref. 92840).
IUCN Red List Status: Least Concern (LC), assessed 2010-03-01. Resilience: High (Preliminary K or Fecundity.).
References
Böhlke and Chaplin 1968
Böhlke and Robins 1968
Bright and Cashman 1974
Williams and Shipp 1980
Robins and Ray 1986
Boschung 1992
Smith 1997
Murdy and Hoese 2002b
Robins, C.R. and G.C. Ray (1986) A field guide to Atlantic coast fishes of North America. Houghton Mifflin Company, Boston, U.S.A. 354 p.
Cervigón, F. (1994) Los peces marinos de Venezuela. Volume 3. Fundación Científica Los Roques, Caracas,Venezuela. 295 p.
Patzner, R.A., J.L. Van Tassell, M. Kovačić and B.G. Kapoor (2011) The biology of gobies. Enfield, NH : Science Publishers ; Boca Raton, FL : DIstributed by CRC Press, 685 p.
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