Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Pentanchidae
Etymology: Galeus: galeos, a small shark or dogfish according to Aristotle and others. (See ETYFish); longirostris: longus (L.), long; rostris, from rostrum (L.), snout, referring to its “considerably longer” snout compared with congeners known at the time. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 440 - 520 m (Ref. 58018). Deep-water
Northwest Pacific: Amami-oshima, the Ogasawara and Izu islands.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 80.3 cm TL male/unsexed; (Ref. 12694)
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Tachikawa, H. and T. Taniuchi, 1987. Galeus longirostris, a new species of the sawtail catshark from Japan. Jap. J. Ichthyol. 33(4):352-359. (Ref. 12694)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 123201
): 2.7 - 7.3, mean 4.6 °C (based on 103 cells).
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00355 (0.00173 - 0.00727), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.2 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (52 of 100).