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Carcharhinus acronotus (Poey, 1860)

Blacknose shark
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Carcharhinus acronotus   AquaMaps   Data sources: GBIF OBIS
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Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)
Etymology: Carcharhinus: karcharos (Gr.), sharp or jagged; rhinus, an ancient name for sharks, from rhine (Gr.), rasp, both words alluding to a shark's jagged, rasp-like skin. (See ETYFish);  acronotus: acro-, from akron (Gr.), top, summit or peak; notus, from notos (Gr.), back, allusion not explained, perhaps referring to “raised” (translation) back at first dorsal fin. (See ETYFish).
More on author: Poey.

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

Marine; reef-associated; depth range 9 - 64 m (Ref. 50072), usually 9 - ? m (Ref. 55176). Subtropical; 40°N - 37°S, 100°W - 33°W (Ref. 55176)

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Western Atlantic: North Carolina, USA to southern Brazil and Uruguay (Ref. 58839), including the Gulf of Mexico and the Caribbean.

Length at first maturity / Size / Weight / Age

Maturity: Lm 110.7, range 87 - 137 cm
Max length : 200 cm TL male/unsexed; (Ref. 244); max. published weight: 18.9 kg (Ref. 40637); max. reported age: 20 years (Ref. 108669)

Biology     Glossary (e.g. epibenthic)

Found on continental and insular shelves, mainly over sandy, shell, and coral bottoms. Feeds on small fishes, including pinfish (Sparidae) and porcupine fish. Preyed on by larger sharks. Viviparous (with a yolk-sac placenta), with 3 to 6 young per litter. Performs a 'hunch' display, with back arched, caudal lowered and head raised, as a possible threat display when confronted by divers. Utilized dried salted for human consumption. Minimum depth from Ref. 055176.

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Viviparous, placental (Ref. 50449), with 3 to 6 young per litter (Ref. 244). Distinct pairing with embrace (Ref. 205).

Main reference Upload your references | References | Coordinator : Compagno, Leonard J.V. | Collaborators

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. 130435)

  Endangered (EN) (A2bd); Date assessed: 01 July 2019

CITES

Appendix II: International trade monitored

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless (Ref. 244)





Human uses

Fisheries: minor commercial; gamefish: yes
FAO - Publication: search | FishSource | Sea Around Us

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Internet sources

AFORO (otoliths) | Aquatic Commons | BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes: genus, species | DiscoverLife | ECOTOX | FAO - Publication: search | Faunafri | Fishipedia | Fishtrace | GenBank: genome, nucleotide | GloBI | GoMexSI (interaction data) | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | OceanAdapt | Otolith Atlas of Taiwan Fishes | Public aquariums | PubMed | Reef Life Survey | Socotra Atlas | Tree of Life | Wikipedia: Go, Search | World Records Freshwater Fishing | Zoological Record

Estimates based on models

Preferred temperature (Ref. 123201): 22.2 - 28, mean 25.5 °C (based on 520 cells).
Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5000   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00479 (0.00221 - 0.01036), b=3.09 (2.92 - 3.26), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245).
Trophic level (Ref. 69278):  4.4   ±0.5 se; based on diet studies.
Resilience (Ref. 120179):  Low, minimum population doubling time 4.5 - 14 years (K=0.12; tm=3; tmax=15; Fec=4).
Prior r = 0.44, 95% CL = 0.29 - 0.66, Based on 1 full stock assessment.
Fishing Vulnerability (Ref. 59153):  High vulnerability (60 of 100).
Price category (Ref. 80766):   Medium.
Nutrients (Ref. 124155):  Calcium = 4.6 [0.8, 24.8] mg/100g; Iron = 0.382 [0.095, 1.094] mg/100g; Protein = 23 [20, 25] %; Omega3 = 0.156 [0.059, 0.385] g/100g; Selenium = 13.2 [4.0, 40.1] μg/100g; VitaminA = 34.1 [11.8, 102.7] μg/100g; Zinc = 0.367 [0.171, 0.718] mg/100g (wet weight);