Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Triakidae
(Houndsharks) > Triakinae
Etymology: Mustelus: Latin for weasel, an ancient name for sharks, possibly referring to the pointed snouts, swift movements and/or rapacious feeding behavior of smaller predatory sharks [strictly not tautonymous with Squalus mustelus Linnaeus 1758 since type was designated by the ICZN]. (See ETYFish); widodoi: In honor of the late Johannes Widodo (1944-2005), Research Institute of Marine Fisheries (Jakarta, Indonesia), “whose research on the shark and ray fisheries of Indonesia has provided important baseline data for this important faunal region”. (See ETYFish).
More on authors: White & Last.
Environment: milieu / climate zone / depth range / distribution range
Marine; benthopelagic; depth range 60 - 120 m (Ref. 72460). Tropical
Western Pacific: Bali, Indonesia.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 108.5 cm TL (female)
Morphology | Morphometrics
This moderately sized species is characterized by the following: low preanal length to anal-caudal space, 7.1-8.7, and to dorsal-caudal space, 5.3-6 ratios; moderately large dorsal fins, upright, base length of first dorsal 1.3-1.5 times anal-caudal space; claspers of adult males terminating well short of anal-fin origin; about 73/69 rows of teeth, exposed evenly around symphysis of lower jaw when mouth is closed; 86-89 precaudal vertebrae centra, 33-35 monospondylous centra; first dorsal fin with a broad white margin; apex of second dorsal fin with a distinct black margin; terminal caudal lobe with distinct black tip (Ref. 72460).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
White, W.T. and P.R. Last, 2006. Description of two new species of smooth-hounds, Mustelus widodoi and M. ravidus (Carcharhiniformes: Triakidae) from the western central Pacific. Cybium 30(3):235-246. (Ref. 72460)
IUCN Red List Status (Ref. 125652)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Phylogenetic diversity index (Ref. 82804
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00224 (0.00103 - 0.00487), b=3.14 (2.97 - 3.31), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.6 ±0.3 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref. 59153
): High to very high vulnerability (65 of 100).