Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Carcharhinidae
Etymology: Carcharhinus: Greek, karcharos = sharpen + Greek, rhinos = nose (Ref. 45335); humani: Named for the late Dr Brett Human, who made important contributions to shark taxonomy in South Africa and Oman in the western Indian Ocean region.
Environment: milieu / climate zone / depth range / distribution range
Marine; pelagic-neritic; depth range 36 - 43 m (Ref. 96342), usually - m (Ref. ). Tropical; 0°C -
Western Indian Ocean: from Kuwait in the Persian (Arabian) Gulf, to Socotra Islands; south to Mozambique (Maputo Bay) and South Africa (Natal).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 84.4 cm TL male/unsexed; (Ref. 96342)
Morphology | Morphometrics
This species is distinguished by the following characters: moderately long and narrowly rounded snout; upper anterior teeth are oblique and blade-like, coarsely serrated, the lateral margin deeply notched and with several large, smooth basal cusplets; lower anterior teeth are narrower, slightly oblique, lateral margins notched and usually several smooth basal cusplets; total tooth row counts 24-26/22-25, or 46-50; a weak ridge usually present on midline of interdorsal space, 20.4-22.0% TL; moderately tall and slightly falcate first dorsal fin, its origin just anterior to pectoral-fin free rear tip, length 13.4-14.6% TL, 1.3-1.5 times height, inner margin 1.7-2.3 times in base; broadly triangular second dorsal fin, its height 39-48% of first dorsal-fin height, origin about opposite to anal-fin origin; anal fin falcate, height 0.8-1.0 times second dorsal height, base 0.9-1.2 times second dorsal-fin base; colour pale brownish to grey dorsally, whitish ventrally; second dorsal fin with a black blotch on upper one to two thirds of fin, not extending onto upper surface of body and strongly demarcated from ground colour; most other fins have whitish outer margins; total vertebral counts 153-160 in 4 type specimens (Ref. 6184:152-167); precaudal counts 75-79 (Ref. 6184:74-85); precaudal counts - monospondylous 45-48, diplospondylous 27-32; diplospondylous caudal counts 78-81 (Ref. 96342).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
White, W. and S. Weigmann, 2014. Carcharhinus humani sp. nov., a new whale shark (Carcharhiniformes: Carcharhinidae) from the western Indian Ocean. Zootaxa 3821(1):071-087. (Ref. 96342)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.1 - 28.3, mean 26 °C (based on 13 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [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
): 4.0 ±0.6 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.).
Vulnerability (Ref. 59153
): Moderate vulnerability (37 of 100) .