Elasmobranchii (sharks and rays) > Carcharhiniformes
(Ground sharks) > Pentanchidae
Etymology: Haploblepharus: haplos (Gr.), single or simple; blepharon (Gr.), eyelid, referring to simple structure of lower eyelid, which closes against upper eyelid to protect the eye. (See ETYFish); fuscus: Latin for dusky, dark or swarthy, probably referring to its overall drab-brown coloration. (See ETYFish).
More on author: Smith.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated. Subtropical; 30°S - 35°S
Southeast Atlantic: just west of Cape Agulhas to southern Natal in South Africa (Ref. 5578). This species is sympatric with Haploblepharus edwardsii in the southeastern Cape region but there is at least partial microhabitat separation between the two - Haploblepharus fuscus occurs inshore while Haploblepharus edwardsii occurs in deeper water offshore (Ref. 244).
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 69.0 cm TL male/unsexed; (Ref. 244); 73.0 cm TL (female)
Morphology | Morphometrics
Found close inshore on the continental shelf, often in shallow, rocky areas (Ref. 244). Feeds on lobsters, crabs and small bony fish (Ref. 5578). Oviparous (Ref. 50449). Readily kept in captivity (Ref. 244). Caught by shore anglers (Ref. 5578).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, laying 2 egg cases at a time (Ref. 11228). Embryos feed solely on yolk (Ref. 50449).
Compagno, L.J.V., 1984. FAO Species Catalogue. Vol. 4. Sharks of the world. An annotated and illustrated catalogue of shark species known to date. Part 2 - Carcharhiniformes. FAO Fish. Synop. 125(4/2):251-655. Rome: FAO. (Ref. 244)
IUCN Red List Status (Ref. 125652)
Threat to humans
Fisheries: subsistence fisheries; gamefish: yes
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 17.1 - 23.4, mean 20.8 °C (based on 49 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5625 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00347 (0.00168 - 0.00717), b=3.08 (2.90 - 3.26), in cm total length, based on LWR estimates for this Subfamily-BS (Ref. 93245
Trophic level (Ref. 69278
): 4.0 ±0.63 se; based on food items.
Resilience (Ref. 120179
): Low, minimum population doubling time 4.5 - 14 years (Fec assumed to be <100).
Fishing Vulnerability (Ref. 59153
): Moderate to high vulnerability (49 of 100) .
Climate Vulnerability (Ref. 125649
): (0 of 100) .
Nutrients (Ref. 124155
): Calcium = 17 [3, 66] mg/100g ; Iron = 0.6 [0.2, 1.7] mg/100g ; Protein = 18.5 [15.6, 21.5] % ; Omega3 = 0.128 [0.052, 0.293] g/100g ; Selenium = 13.5 [3.3, 40.2] μg/100g ; VitaminA = 44.7 [13.7, 135.5] μg/100g ; Zinc = 0.709 [0.321, 1.797] mg/100g (wet weight);