Elasmobranchii (sharks and rays) > Orectolobiformes
(Carpet sharks) > Hemiscylliidae
Etymology: Hemiscyllium: hemi-, from hemisys (Gr.), half, presumably referring to similarity and/ or close affinity to Scyllium (=Scyliorhinus, now in Scyliorhinidae) and/or Chiloscyllium; skylion, Greek for dogfish or small shark. (See ETYFish); hallstromi: In honor of philanthropist Edward Hallstrom (1886-1970), trustee and chairman of Taronga Zoological Park (Sydney, Australia), where holotype and paratype were alive in captivity. (See ETYFish).
More on author: Whitley.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 0 - 15 m (Ref. 90102). Tropical; 7°S - 10°S, 144°E - 146°E (Ref. 54464)
Western Pacific: Known only from Papua New Guinea (Gulf of Papua to Milne Bay Prov.). Reported from Indonesia (occurrence questionable).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 77.0 cm TL male/unsexed; (Ref. 90102)
soft rays: 0. Caudal fin with a pronounced subterminal notch but without a ventral lobe (Ref. 13575). Lateral ocellus surrounded by large black spots; spots absent from head in front and below eyes (Ref. 13575).
A little-known inshore bottom shark, probably on coral reefs (Ref. 247). Oviparous (Ref. 50449).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, paired eggs are laid. 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 1 - Hexanchiformes to Lamniformes. FAO Fish. Synop. 125(4/1):1-249. Rome, FAO. (Ref. 247)
IUCN Red List Status (Ref. 126983)
Threat to humans
Fisheries: minor commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00181 - 0.00918), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.3 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 (51 of 100).