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); halmahera: Named for Halmahera, Indonesia, type locality. (See ETYFish).
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 5 - 10 m (Ref. 106604). Tropical
Western Pacific: Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 68.1 cm TL male/unsexed; (Ref. 94061)
Morphology | Morphometrics
This species is distinguished by its colour pattern, generally brown with numerous clusters of mainly 2-3 dark polygonal spots; widely scattered white spots in the matrix between dark clusters; less than 10 large dark spots on the interorbital/snout region; a pair of large dark marks on the ventral surface of the head; a fragmented post-cephalic mark consisting of a large U-shaped dark spot with a more or less continuous white margin on the lower half, followed by a vertical row of 3, smaller clusters of 2-3 polygonal dark marks (Ref. 94061).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Allen, G.R., M.V. Erdmann and C.L. Dudgeon, 2013. Hemiscyllium halmahera, a new species of Bamboo Shark (Hemiscylliidae) from Indonesia. aqua, International Journal 19(3):123-136. (Ref. 94061)
IUCN Red List Status (Ref. 126983)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
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
): 3.4 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Preliminary low fecundity).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (47 of 100).