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Promethichthys prometheus (Cuvier, 1832) Roudi escolar |
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photo by
Cambraia Duarte, P.M.N. (c)ImagDOP |
Family: | Gempylidae (Snake mackerels) | |||
Max. size: | 100 cm SL (male/unsexed) | |||
Environment: | benthopelagic; marine; depth range 80 - 800 m, oceanodromous | |||
Distribution: | Tropical and warm temperate waters of all oceans, but absent from eastern Pacific except at Sala y Gomez Ridge. | |||
Diagnosis: | Dorsal spines (total): 18-20; Dorsal soft rays (total): 17-20; Anal spines: 2-3; Anal soft rays: 15-17. Body moderately elongate. Mouth with fang-like teeth. Spinescent gill rakers on the first arch with 1 - 3 cusps and many small spines; the angular raker long and triple-rooted. Body entirely scaled at over 20 - 25 cm SL. Pyloric caeca 7 or 8. Color is grayish to copper brown; fins blackish at over 40 cm SL, yellowish with black tips in smaller specimens (the first dorsal fin with a black blotch on two anteriormost membranes); the buccal and branchial cavities are black. Pelvic fin reduced to one spine that becomes entirely absent in specimens more than 40 cm SL. | |||
Biology: | Found at continental slopes, around oceanic islands and submarine rises (Ref. 6181). Meso-benthopelagic (Ref. 58302). Migrate to midwater at night (Ref. 6181). Feed on fish, cephalopods and crustaceans (Ref. 6181). Eggs and larvae are pelagic (Ref. 6766). | |||
IUCN Red List Status: | Least Concern (LC); Date assessed: 22 August 2012 Ref. (130435) | |||
Threat to humans: | reports of ciguatera poisoning |