Sternoptyx diaphana Hermann, 1781 Diaphanous hatchet fish |
photo by
Orlov, A. |
Family: | Sternoptychidae (Marine hatchetfishes), subfamily: Sternoptychinae | |||
Max. size: | 5.5 cm SL (male/unsexed); max.weight: 6.9 g | |||
Environment: | bathypelagic; marine; depth range 400 - 3676 m, oceanodromous | |||
Distribution: | Atlantic, Indian and Pacific: mainly tropical regions (Ref. 47377). Eastern Atlantic: scattered records southwest of Ireland, also from Spain south to Angola. South China Sea and East China Sea (Ref.74511). | |||
Diagnosis: | Dorsal spines (total): 0-0; Dorsal soft rays (total): 9-11; Anal spines: 0-0; Anal soft rays: 12-16. Triangular transparent membrane present above anal fin base (Ref. 13608). | |||
Biology: | Oceanic and non-vertical migrant (Ref. 4739). Mesopelagic at 275-1200 m (Ref. 58302). Commonly found in 500-800 m both day and night (Ref. 4054). Possibly a cyclic feeder of copepods, ostracods, euphausiids, amphipods, fishes and other taxa (Ref. 4739). Adult photophore complement acquired at 11-13 mm SL (Ref. 4739). Lipid content 1.4 % in fresh body weight and wax ester is 4.2 % in total lipids (Ref. 9193). | |||
IUCN Red List Status: | Least Concern (LC); Date assessed: 15 July 2014 Ref. (130435) | |||
Threat to humans: | harmless | |||
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