Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 330 - 5100 m (Ref. 6538). Deep-water
Circumglobal in all oceans. Eastern Atlantic: Gibraltar to the Azores and Madeira; South Africa (Ref. 6593). Eastern Indian Ocean: Australia (Ref. 7300). Southwest Pacific: New Zealand (Ref. 5755). Eastern Pacific: Oregon, USA to Panama (Ref. 35598), and Chile (Ref. 9068).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 15.0 cm TL male/unsexed; (Ref. 6538); common length : 13.0 cm TL male/unsexed; (Ref. 6538)
Black in color (Ref. 6593).
Meso- and bathypelagic (Ref. 58302). Found in midwater, usually greater than 610 m (Ref. 35598). Oviparous, with planktonic eggs and leptocephali (Ref. 35598). Relatively rare (Ref. 35598).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Saldanha, L., 1990. Cyemidae. p. 203. 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. 6538)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
Estimates based on models
Preferred temperature (Ref. 115969
): 1.9 - 5.2, mean 3 °C (based on 3999 cells).
Phylogenetic diversity index (Ref. 82805
= 1.2500 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00102 (0.00046 - 0.00225), b=3.06 (2.88 - 3.24), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tmax>3).
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .