Gonostoma elongatum
Longtooth Anglemouth
NS
G5
Collection Details
Specimens
Photos
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Records
Taxonomic Hierarchy
Actinopterygii (Ray-finned Fishes)
Stomiiformes
Gonostomatidae (Bristlemouths)
Gonostoma
Gonostoma elongatum (Longtooth Anglemouth)
Description
This species account was compiled from
McEachran & Fechhelm (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 slender body; large mouth; two rows of photophores; premaxillary teeth uniserial with large fanglike teeth separated by small teeth; vomer with 1 or 2 teeth on each side; palatine with 12 to 15 small teeth; pseudobranch poorly developed; gill filaments long and free at base; 18 to 21 gill rakers on first arch; 13 or 14 branchiostegal rays; dorsal adipose fin present; dorsal fin with 12 to 15 rays; anal fin with 29 to 32 rays; last dorsal and anal fin rays split to base; specific photophore counts (ORB, OP, BR, IV, VAV, OA, AC); one or two supracaudal and two infracaudal glands
Dark with flank slightly silvery
Distribution
Western Atlantic from south of Newfoundland and off Bermuda to the northeastern coast of South America, including the entire Gulf of Mexico and the Caribbean Sea
Entire Gulf of Mexico
Habitat Associations
Tropical to subtropical seas; generally caught between 500 and 1,200 m or deeper during the day and between 50 and 400 m during the night
Biology
Crustaceans and small fishes
Maximum known size is 178 mm SL for males and 275 mm SL for females
Protandric hermaphroditism; spawning takes place mainly in spring and summer; males mature at 110 mm SL and females mature at 200 mm SL
References
Grey 1964
Rass 1971
Bekker et al. 1975
Murdy et al. 1983
Badcock 1984a
Schaefer et al. 1986b
Comments On Gonostoma elongatum