Elasmobranchii (sharks and rays) > Orectolobiformes
(Carpet sharks) > Hemiscylliidae
Etymology: Hemiscyllium: Greek, hemi = half + Greek, skylla = a kind of shark (Ref. 45335); galei: Named for Jeffrey Gale, an avid underwater photographer, shark enthusiast, and benefactor of the marine realm.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 2 - 25 m (Ref. 114942). Tropical
Western Pacific: apparently confined to Cenderawasih Bay, Papua Barat Province, Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 56.8 cm TL male/unsexed; (Ref. 74956)
Morphology | Morphometrics
This species of bamboo shark is distinguished by its unique combination of white lines/spots along the margin of the large, dark saddles on the back, scattered white spots particularly on the upper side, and a row of 7-8 well-defined, horizontally-ovate, dark spots on the lower side between the abdomen and caudal-fin base (Ref. 74956).
Occurs on shoreline fringing reefs or shallow patch reefs; observed at night at depths of 2-25 m (extreme depth from Ref. 114942), usually seen resting on the bottom, occasionally observed while slowly swimming or 'walking' over the bottom with the pectoral and pelvic fins. Probably sedentary during daylight hours, sheltering under rocky outcrops or tabular corals, typical for other family members (Ref. 74956).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R. and M.V. Erdmann, 2008. Two new species of bamboo sharks (Orectolobiformes: hemiscylliidae) from Western New Guinea. aqua, Int. J. Ichthyol. 13(3-4):93-108. (Ref. 74956)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 28.1 - 29.2, mean 28.8 °C (based on 448 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00407 (0.00179 - 0.00926), 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
): 3.4 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years ().
Vulnerability (Ref. 59153
): Low to moderate vulnerability (27 of 100) .