Actinopterygii (ray-finned fishes) > Myctophiformes
(Lanternfishes) > Myctophidae
(Lanternfishes) > Myctophinae
Etymology: Myctophum: Greek, mykter, -eros = nose + Greek, ophis = serpent (Ref. 45335). More on author: Garman.
Environment / Climate / Range
Marine; bathypelagic; oceanodromous (Ref. 51243); depth range 0 - 1000 m (Ref. 74511). Deep-water; 42°N - 52°S, 112°E - 117°W
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 6 - ? cm
Max length : 8.3 cm SL male/unsexed; (Ref. 4479)
soft rays: 18 - 21;
Vertebrae: 36 - 39. Branchiostegal rays: 9-10 (Ref. 31442). Anal organs 14; male supracaudal gland has 5-8, female infracaudal gland with 2-6 small, round to oblong spots, respectively; may be distinguished from all other Myctophum possessing cycloid scales by its angulate, non-serrate, posterodorsal margin of the operculum (Ref. 39633).
Circumglobal (Ref. 7300) in all tropical and subtropical waters (Ref. 47377). Eastern Atlantic: Morocco to South Africa (as expatriates in Agulhas water pockets). Western Atlantic: between about 42°N and 34°S. Indian Ocean: between 7°N and 24°S. Pacific Ocean: between 32°N and 31°S, but extends northward to 40°N in the Kuroshio Current. South China Sea (Ref.74511).
High-oceanic, nyctoepipelagic at the surface and to 950 m and generally found between 475-850 m during the day (Ref. 4479). Neustonic to mesopelagic (Ref. 58302). Oviparous, with planktonic eggs and larvae (Ref. 31442). Lipid content is 3.8 % in fresh body weight and wax ester is 10.6 % in total lipids (Ref. 9193). Females reach sexual maturity at 4.8 cm, males at 3.5 cm (Ref. 47377).
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. (Ref. 4479)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01023 (0.00417 - 0.02512), b=3.11 (2.90 - 3.32), based on LWR estimates for this Subfamily-body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.4 ±0.45 se; Based on food items.
Resilience (Ref. 69278
): Medium, minimum population doubling time 1.4 - 4.4 years (K=0.42; tm=3).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (28 of 100) .