Elasmobranchii (sharks and rays) > Squaliformes
(Sleeper and dogfish sharks) > Squalidae
Etymology: Squalus: Genus name from Latin 'squalus' meaning shark (Ref. 6885, 27436).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range - 1000 m (Ref. 76802), usually - m (Ref. ). Tropical; 0°C -
Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri
Western Indian Ocean: Seychelles.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 61.5 cm TL male/unsexed; (Ref. 76802); 78.8 cm TL (female)
Morphology | Morphometrics
This species is characterized by having a low number of precaudal vertebrae (67-69); rounded free rear tip of pectoral; only 1 developed lobe at the anterior part of nostril flap; nostrils' inner corner at about midway between tip of snout and upper lip; uniformly grey body color with dorsal fins blackish (Ref. 76802).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Distinct pairing with embrace (Ref. 205).
Baranes, A., 2003. Sharks from the Amirantes Islands, Seychelles, with a description of two new species of squaloids from the deep sea. Israel J. Zool. 49:33-65. (Ref. 76802)
IUCN Red List Status (Ref. 124695)
Threat to humans
CountriesFAO areasEcosystemsOccurrencesIntroductionsStocksEcologyDietFood itemsFood consumptionRation
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00339 (0.00158 - 0.00727), b=3.09 (2.91 - 3.27), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.3 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): High to very high vulnerability (68 of 100) .