Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Proscylliidae
Etymology: Proscyllium: Greek, pro = first, in front of + Greek, skylla = a kind of shark (Ref. 45335). More on author: Hilgendorf.
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 50 - 100 m (Ref. 244), usually - m (Ref. ). Tropical; 0°C - ; 39°N - 8°S
Western Pacific: southeastern Japan to Viet Nam and northwestern Java, Indonesia (Ref. 13566).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 57.0 cm TL male/unsexed; (Ref. 244); 65.0 cm TL (female)
soft rays: 0. Caudal fin without a rippled dorsal margin and ventral lobe but with a strong subterminal notch; vertebral axis of caudal fin little raised above body axis (Ref. 13566). Round dark brown spots and indistinct saddles (Ref. 13566).
A little-known, uncommon bottom-dwelling shark found on the shelves of continental and insular waters (Ref. 244). Dwell on the sublittoral zone, 50-320 m (Ref. 11230). Food habits little known; probably feeding on bony fishes, crustaceans and cephalopods (Ref. 244). Oviparous (Ref. 50449), with 1 to 2 pups in a litter (Ref. 244).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, with a single egg deposited per uterus (Ref. 244). Embryos feed solely on yolk (Ref. 50449).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN Red List Status (Ref. 124695)
Fisheries: subsistence fisheries
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 17.4 - 28, mean 25.1 °C (based on 134 cells).
Phylogenetic diversity index (Ref. 82805
= 0.6328 [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), in cm total length, based on all LWR estimates for this body shape (Ref. 93245
Trophic level (Ref. 69278
): 4.1 ±0.57 se; based on food items.
Resilience (Ref. 120179
): Very Low, minimum population doubling time more than 14 years (Fec = 1-2).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (29 of 100) .