Actinopterygii (ray-finned fishes) > Lampriformes
(Velifers, tube-eyes and ribbonfishes) > Radiicephalidae
Etymology: Radiicephalus: Latin, radius + Greek, kephale = head (Ref. 45335).
Environment / Climate / Range
Marine; pelagic-oceanic; depth range 570 - ? m (Ref. 58018). Deep-water; 38°N - 40°S, 130°W - 20°E
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 76.0 cm TL male/unsexed; (Ref. 4506)
Eastern Atlantic: off Morocco and the Azores (Ref. 6739) southward to Cape Point, South Africa (Ref. 6551). Eastern Pacific: present in the California Current region (Ref. 36609).
Mesopelagic species (Ref. 6808). Adults feed on lantern-fishes (Myctophidae) and possibly euphausiid crustaceans (Ref. 6739). Oviparous, with planktonic larvae (Ref. 36609). They have the ability to discharge dark brown fluid from the ink-sac when alarmed.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Aguiar, A. and J.-C. Quéro, 1990. Trachipteridae. p. 647-649. 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. 2. (Ref. 4506)
IUCN Red List Status (Ref. 96402)
CITES (Ref. 94142)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates of some properties based on models
Phylogenetic diversity index (Ref. 82805
= 1.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00389 (0.00180 - 0.00842), b=3.12 (2.94 - 3.30), based on all LWR estimates for this body shape (Ref. 93245
Trophic Level (Ref. 69278
): 3.9 ±0.63 se; Based on food items.
Resilience (Ref. 69278
Vulnerability (Ref. 59153
): Moderate to high vulnerability (50 of 100) .