Eustomias longibarba
No common name
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Stomiiformes
Stomiidae (Dragonfishes)
Eustomias
Eustomias longibarba
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.
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Characters
Elongate and very slender, with a long, tapering, protrusible snout; abdominal pelvic fins. Body depth 6.4% to 8.2% and head length 12.2% to 13.6% of SL. Lower jaw about as long as upper jaw and not upturned at tip. Premaxilla with 10 to 13 teeth. Lower jaw with 12 to 15 teeth. Chin barbel 40% to 78% of SL with slender stem and single, elongate terminal bulb 1.1% to 2.3% of SL bearing simple, digitate terminal projection. Deep ventral groove on belly absent. Pectoral fin with 3 rays. Dorsal fin with 23 to 26 rays, and anal fin with 35 to 39 rays. Pelvic fin with 7 rays. IP number 7, PV number 32 to 35, and VAV number 16 to 20. OV number 32 to 35, VAL number 17 to 19, and AC number 16 to 20. Preorbital and suborbital luminous organs absent. Po about 1% of SL. Vertebrae number 66 to 68.
Color is black. Barbel stem has little external pigment.
Distribution
In the western Atlantic off Bermuda, in the Straits of Florida, the northern Gulf of Mexico
northern Gulf of Mexico
Habitat Associations
Marine. bathypelagic. depth range 0-1820 m.
Biology
Maximum known size is 129 mm SL
Mesopelagic species (Ref. 4468).
Reproductive mode: dioecism; fertilization: external; nonguarders (open water/substratum egg scatterers); parental care: none.
IUCN Red List Status: Least Concern (LC), assessed 2014-07-01. Resilience: Medium (Preliminary K or Fecundity.).
Phylogeny and Morphologically Similar Fishes
Distinguished from other species of the family by the combination of characters described
Commercial or Environmental Importance
Fisheries: of no interest.
References
Morrow and Gibbs 1964
Gibbs et al. 1983
Gibbs 1984d
Gibbs, R.H. and M.A. Barnett (1990) Melanostomiidae. p. 308-337. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 1.
Gibbs, R.H. Jr., T.A. Clarke and J.R. Gomon (1983) Taxonomy and distribution of the stomioid fish genus Eustomias (Melanostomiidae), I: subgenus Nominostomias. Smithson. Contrib. Zool. 380:139 p.
Bigelow, H.B., D.M. Cohen, M.M. Dick, R.H. Gibbs Jr., M. Grey, J.E. Morrow Jr., L.P. Schultz and V. Walters (1964) Fishes of the western North Atlantic. Part four. New Haven, Sears Found. Mar. Res., Yale Univ.
Patzner, R.A. (2008) Reproductive strategies of fish. pp. 311-350. In Rocha, M.J., A. Arukwe and B.G. Kapoor (eds). Fish reproduction: cytology, biology and ecology. Science Publisher, Inc. Oxford. 631 p.
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