Scoliodon macrorhynchos

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Scoliodon macrorhynchos (Bleeker, 1852)

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Scoliodon macrorhynchos
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drawing shows typical fish in this Family.

Classificatie / Names Populaire namen | Synoniemen | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (haaien en roggen) (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Scoliodon: Greek, skolex = worm + Greek, odous = teeth (Ref. 45335).

Environment: milieu / climate zone / depth range / distribution range Ecologie

; marien demersaal.   Tropical

Verspreiding Landen | FAO regio's | Ecosystems | Voorkomen | Point map | Introducties | Faunafri

Western Central Pacific: W Indonesia, Malaysia, Gulf of Thailand, Singapore, Borneo, Philippines, China, Hong Kong, Taiwan and Japan; exceptions, E Indonesia, New Guinea, northern Australia, and remainder of the Oceania region.

Size / Gewicht / Leeftijd

Maturity: Lm ?  range ? - 39.7 cm
Max length : 63.6 cm TL mannelijk/geslacht niet bekend; (Ref. 84283); 70.7 cm TL (female)

Korte beschrijving Morfologie | Morfometrie

Wervels: 149 - 171. This small carcharhinid species is distinguished by the following set of characters: snout long and extremely flattened; slender body and tail; smooth-edged teeth with slender, strongly oblique, blade-like cusps and no cusplets; anterior teeth strongly sexually dimorphic, for adult males greatly elongate and flexuous; total tooth row counts 25-28/23-28 rows or 48-56 total rows; second dorsal-fin origin well posterior of anal-fin origin, about opposite posterior third of anal-fin base; second dorsal-fin origin to anal fin origin 6.0-9.1% TL, 1.3-2.5 times second dorsal-fin base; interdorsal space 17.9-22.2% TL; small pelvic fins, anterior margins 41-56% of pectoral anterior margin; first dorsal fin small, broadly triangular, origin behind pectoral fin free rear tips, free rear tip over posterior half of pelvic fin bases, length 12.9-15.5% TL, inner margin 2.1-3.0 in base; second dorsal fin very small, base 2.0-3.5 times height; height 18-27% of first dorsal-fin height; anal fin large, length 11.1-14.1% TL, height 1.7-2.5 times second dorsal-fin height, base 1.9-3.1 times second dorsal-fin base; total vertebral count 149-171, monospondylous precaudal count 44-50, diplospondylous precaudal count 53-64, diplospondylous caudal count 49-59, precaudal count 98-114; colour greenish-bronze dorsally, off white ventrally when fresh; preserved specimens are slate-grey dorsally whitish ventrally with waterline clearly demarcated along head, more diffuse along body, no distinct black spots on fins (Ref. 84283).

Biologie     Verklarende woordenlijst (b.v. epibenthic)

Occurs in shallow, inshore waters, most abundant near large freshwater outflows, e.g. Pearl River estuary (Hong Kong) and the large Borneo drainage systems (Ref. 84283).

Life cycle and mating behavior Geslachtsrijpheid | Voortplanting | Kuitschieten | Eieren | Fecundity | Larven

Voornaamste referentie Upload your references | Referenties | Coördinator : Compagno, Leonard J.V. | Medewerkers

White, W.T., P.R. Last and G.J.P. Naylor, 2010. Scoliodon macrorhynchos (Bleeker, 1852), a second species of spadenose shark from the Western Pacific (Carcharhiniformes: Carcharhinidae). pp. 61-76. In P.R. Last, W.T. White, and J.J. Pogonoski (eds). Descriptions of new sharks and rays from Borneo. CSIRO Marine and Atmospheric Research Paper no. 32. (Ref. 84283)

Status op de Rode Lijst van het IUCN (Ref. 120744)


CITES (Ref. 118484)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Gevaarlijk voor mensen

  Harmless





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Estimates based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01000 (0.00244 - 0.04107), b=3.04 (2.81 - 3.27), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic Level (Ref. 69278):  3.9   ±0.5 se; Based on size and trophs of closest relatives
Weerstandsvermogen (Ref. 120179):  Gemiddeld, minimale populatieverdubbelingstijd 1,4-4,4 jaar (Preliminary K or Fecundity.).
Kwetsbaarheid (Ref. 59153):  Low to moderate vulnerability (34 of 100) .