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Elasmobranchii (sharks and rays) > Orectolobiformes (Carpet sharks) > Hemiscylliidae (Bamboo sharks)
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 Ecology

Marine; pelagic-neritic; depth range 5 - 10 m (Ref. 106604). Tropical

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Western Pacific: Indonesia.

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 68.1 cm TL male/unsexed; (Ref. 94061)

Short description Identification keys | 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

Main reference Upload your references | References | Coordinator | Collaborators

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. 130435: Version 2024-1)

Near Threatened (NT) (B2ab(ii,iii,v)); Date assessed: 04 May 2020

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

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Estimates based on models

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.00398 (0.00176 - 0.00901), 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).

Hemiscyllium halmahera Allen, Erdmann & Dudgeon, 2013