Elasmobranchii (sharks and rays) > Squaliformes
(Sleeper and dogfish sharks) > Etmopteridae
Etymology: Etmopterus: Greek, ethmos, -ou = sieve or ethmoides bone + Greek, pteron = wing, fin (Ref. 45335). More on authors: Fricke & Koch.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-oceanic; depth range 383 - 1300 m (Ref. 106604), usually - m (Ref. ). Deep-water; 0°C -
Southeast Atlantic: off southwestern Cape Province and northern Natal in South Africa (Ref. 6577, 11228). Etmopterus compagnoi was formerly confused with Etmopterus gracilispinis Krefft 1968 which also occurs off the eastern Cape and northern Natal.
Length at first maturity / Size / Weight / Age
Maturity: Lm ?, range 55 - ? cm
Max length : 78.0 cm TL male/unsexed; (Ref. 11228)
Morphology | Morphometrics
Dark brown in color with no conspicuous flank margins (Ref. 6577).
Found in deep water. Males mature at 55 cm. Ovoviviparous (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing with embrace (Ref. 205).
Heemstra, P.C., 1995. Additions and corrections for the 1995 impression. p. v-xv. In M.M. Smith and P.C. Heemstra (eds.) Revised Edition of Smiths' Sea Fishes. Springer-Verlag, Berlin. (Ref. 11228)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 5.2 - 10.9, mean 8.8 °C (based on 22 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00380 (0.00181 - 0.00801), b=3.08 (2.89 - 3.27), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.3 se; based on diet studies.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Vulnerability (Ref. 59153
): Moderate to high vulnerability (50 of 100) .