Elasmobranchi (squali e razze) (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); michaeli: In honor of photographer and aquarist Scott W. Michael, who brought the difference between this species and H. freycineti to the authors’ attention, and for contributing information and photographs to the senior author’s research on Indo-Pacific fishes (See ETYFish).
Eponymy: Scott W Michael is an author and a photographer who specializes in elasmobranchs and coral reef fishes. [...] (Ref. 128868), visit book page.
Ambiente: milieu / zona climatica / distribuzione batimetrica / gamma di distribuzione
Ecologia
marino benthopelagico; distribuzione batimetrica 2 - 20 m (Ref. 90102). Tropical
Westen Pacific Ocean: Eastern Papua New Guinea.
Dimensione / Peso / Età
Maturità: Lm ?  range ? - ? cm
Max length : 69.5 cm TL maschio/sesso non determinato; (Ref. 83755); 25.7 cm TL (female)
Breve descrizione
Chiavi di identificazione | Morfologia | Morfometria
The species was previously confused with H. freycineti, which is restricted to Papua Barat Province (western New Guinea), Indonesia. The two species differ primarily in colour pattern, which provides the best means of separating the various members of the genus. Both species have a profuse covering of brown spots with a large black or brown ocellated marking on the middle of the side, just behind the head. The spots of H. michaeli are generally denser, larger, and distinctly polygonal, remarkably similar to the spots of a leopard. In contrast those of H. freycineti are round to transversely elongate and are darkened at regular intervals to form 8-9 bars or saddle-like markings (including those on the tail). The difference in spot pattern between the two species is particularly evident in the head region. In addition, H. michaeli possesses a vivid ocellate black spot behind the head, whereas the black spot of H. freycineti is generally not well defined. Comparison of the mitochondrial ND4 gene also supports the species-level separation of these species.
Body shape (shape guide): elongated; Cross section: compressed.
Usually encountered on coastal fringing reefs and patch reefs during night diving, although it is sometimes seen during the day, sheltering under rocky outcrops or tabular corals (Ref. 83755).
Ciclo vitale e comportamento di accoppiamento
Maturità | Riproduzione | Deposizione | Uova | Fecondità | Larve
Allen, G.R. and C.L. Dudgeon, 2010. Hemiscyllium michaeli, a new species of Bamboo Shark (Hemiscyllidae) from Papua New Guinea. aqua, Int. J. Ichthyol. 16(1):19-30. (Ref. 83755)
Stato della Lista Rossa IUCN (Ref. 130435: Version 2025-2 (Global))
Minaccia per l'uomo
Harmless
Usi umani
Strumenti
Rapporti speciali
Scarica XML
Fonti Internet
Stime basate su modelli
Indice di diversità filogenetica (Fonte Biblio. 82804) |
PD50 = 0.5020 [Uniqueness, from 0.5 = low to 2.0 = high]. |
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Bayesian length-weight
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a=0.00407 (0.00180 - 0.00922), b=3.09 (2.89 - 3.29), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245). |
Livello trofico (Fonte Biblio. 69278) |
3.4 ±0.3 se; based on size and trophs of closest relatives |
Vulnerabilità della pesca (Ref. 59153) |
Moderate vulnerability (36 of 100). 🛈 |