Diaphus effulgens
No common name
NS
G5
Collection Details
Specimens
Photos
There are no photos available for this taxon yet.
Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Myctophiformes (Lanternfishes)
Myctophidae (Lanternfishes)
Diaphus
Diaphus effulgens
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
Moderately slender and compressed; moderately large mouth; dorsal and anal fin bases of equal length; snout blunt; jaws extend 0.5 to 0.7 times diameter of eye beyond posterior orbital margin; maxilla not expanded posteriorly; head 28.5% to 33% of SL; operculum tapers to acute point at PLO; gill rakers number 19 to 22; dorsal fin originates slightly in advance of pelvic fin base with 15 or 16 rays; pectoral fin does not extend to pelvic fin base with 11 or 12 rays; anal fin originates at or slightly behind end of dorsal fin base with 14 or 15 rays; Dn larger than nasal rosette, directed forward, and extends above dorsal margin of orbit; Vn very large, in contact with Dn, and extends along anteroventral margin of orbit to anterior margin of pupil; Ant triangular shaped above Dn; PVO PVO , and PO in straight line; PLO nearer to base of pectoral fin than to lateral line; five PO present with PO elevated; VLO photophore midway between lateral line and pelvic fin base or slightly lower; five VO present with VO VO , and VO progressively elevated; SAO form straight line with SAOx behind VO , and SAO 3 above anal fin origin; Pol 1.5 to 2 times its diameter below lateral line; AOa number five to seven with AOaj elevated above and in front of AOa , and last AO elevated; AOp number five or six with first AOp behind anal fin base; four Prc form gentle curve with Prc about 2 to 3 times its diameter below lateral line; luminous scale present at PLO
Distribution
Southern New England to the Caribbean Sea, including the eastern Gulf of Mexico off the Florida Escarpment
Not common in the Gulf of Mexico
Habitat Associations
Daytime depths range from 300 to 850 m, and nighttime depths range from 90 to 330 m
Biology
Maximum known size is 150 mm SL
High-oceanic and mesopelagic species (Ref. 4066), found between 501-700 m during the day and between 40-175 m during the night, exhibiting size stratification with depth (Ref. 4479). Probably spawns in deep water during spring (Ref. 4479).
IUCN Red List Status: Least Concern (LC), assessed 2012-07-10. Resilience: Medium (Preliminary K or Fecundity.).
Commercial or Environmental Importance
Fisheries: of no interest.
References
Nafpaktitis 1968
Nafpaktitis et al. 1977
Hulley 1986b
Gartner et al. 1987
Hulley, P.A. (1986) Myctophidae. p. 282-321. In M.M. Smith and P.C. Heemstra (eds.) Smiths' sea fishes. Springer-Verlag, Berlin.
Hulley, P.A. (1990) Myctophidae. p. 398-467. 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.
Bogutskaya, N.G. (2007) Preliminary assignment of coordinates to type localities in the Catalog of Fishes. Unpublished dbf file.
Comments On Diaphus effulgens