(Lightfishes and dragonfishes) > Sternoptychidae
(Marine hatchetfishes) > Sternoptychinae
Etymology: Sternoptyx: Greek, sternon = sternon, + Greek, ptyx = fold (Ref. 45335).
Environment: milieu / climate zone / depth range / distribution range
; marino batipelagico; oceanodromo (Ref. 51243); distribuzione batimetrica 400 - 3676 m (Ref. 26165), usually 500 - 800 m (Ref. 47377). Deep-water; 52°N -
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).
Size / Peso / Age
Maturity: Lm ?  range ? - ? cm
Max length : 5.5 cm SL maschio/sesso non determinato; (Ref. 47377)
Spine dorsali (totale): 0; Raggi dorsali molli (totale): 9-11; Spine anali 0; Raggi anali molli: 12 - 16. Triangular transparent membrane present above anal fin base (Ref. 13608).
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).
Life cycle and mating behavior
Maturità | Riproduzione | Deposizione | Uova | Fecundity | Larve
Quéro, J.-C., J.C. Njock and M.M. de la Hoz, 1990. Sternoptychidae. p. 275-282. 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. (Ref. 4462)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Pesca: di nessun interesse
Estimates based on models
Preferred temperature (Ref. 115969
): 2.4 - 10.4, mean 6.8 °C (based on 1057 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01622 (0.00649 - 0.04054), b=3.06 (2.84 - 3.28), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.2 se; based on diet studies.
Resilienza (Ref. 120179
): Medio, tempo minimo di raddoppiamento della popolazione 1.4 - 4.4 anni (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low vulnerability (16 of 100) .