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Negaprion acutidens  (Rüppell, 1837)

Sicklefin lemon shark
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Native range | Year 2100
Negaprion acutidens   AquaMaps   Data sources: GBIF OBIS
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Image of Negaprion acutidens (Sicklefin lemon shark)
Negaprion acutidens
Picture by Randall, J.E.

Classification / Names Common names | Synonyms | Catalog of Fishes (gen., sp.) | ITIS | CoL | WoRMS | Cloffa

Elasmobranchii (sharks and rays) > Carcharhiniformes (Ground sharks) > Carcharhinidae (Requiem sharks)

Environment / Climate / Range Ecology

Marine; brackish; reef-associated; depth range 0 - 92 m (Ref. 244).   Tropical, preferred ?; 30°N - 32°S, 32°E - 140°W (Ref. 244)

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

Indo-Pacific: Red Sea and South Africa (including Mauritius, Seychelles, Madagascar) to Philippines, north to Viet Nam, south to Australia. Also from Palau, Marshall Islands, and Tahiti. Recorded from Taiwan (Ref. 4868).

Length at first maturity / Size / Weight / Age

Maturity: Lm ?, range 220 - 240 cm
Max length : 380 cm TL male/unsexed; (Ref. 5213)

Short description Morphology | Morphometrics

Dorsal spines (total): 0; Dorsal soft rays (total): 0; Anal spines: 0; Anal soft rays: 0. A large, stocky, yellowish shark with a broad, blunt snout, narrow, smooth-cusped teeth in both jaws, and equal-sized dorsal fins (Ref. 5578). Yellowish brown above, paler below (Ref. 9997). With two nearly equally large dorsal fins (Ref. 37816).

Biology     Glossary (e.g. epibenthic)

Found on continental and insular shelves and terraces (Ref. 244). Common on coral reefs (Ref. 5578) and in shallow, sandy lagoons and turbid, mangrove swamps (Ref. 6871). Feeds on smaller sharks, stingrays and on benthic bony fishes (Ref. 5578). Viviparous (Ref. 50449). Dangerous if provoked (Ref. 244). 1 to 11 of 45 cm young are born per litter (Ref. 1602). Meat is utilized fresh and dried salted for human consumption, fins for shark-fin soup base, and liver oil for vitamins (Ref. 244).

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Viviparous, placental (Ref. 50449), 1-14 per litter (Ref. 6871). Gestation period 10-11 months (Ref. 5578; Ref.58048). Size at birth about 50 to 70 cm TL (Ref. 9997); 45-80 cm TL (Ref.58048). Distinct pairing with embrace (Ref. 205). Mating and pupping take place during late spring and early summer (Ref. 37816).

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. 115185)

  Vulnerable (VU) (A2abcd+3bcd+4abcd)

CITES (Ref. 94142)

Not Evaluated

Threat to humans

  Traumatogenic (Ref. 244)




Human uses

Fisheries: commercial
FAO(Publication : search) | FisheriesWiki | Sea Around Us

More information

Countries
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Ecology
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Common names
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Predators
Ecotoxicology
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Fecundity
Eggs
Egg development
Age/Size
Growth
Length-weight
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Length-frequencies
Morphometrics
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Stamps, Coins
Sounds
Ciguatera
Speed
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Gill area
Otoliths
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Tools

E-book | Field guide | Identification keys | Length-frequency wizard | Life-history tool | Point map | Classification Tree | Catch-MSY |

Special reports

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Download XML

Summary page | Point data | Common names | Photos

Internet sources

BHL | Cloffa | BOLDSystems | Websites from users | Check FishWatcher | CISTI | Catalog of Fishes (gen., sp.) | DiscoverLife | DORIS | ECOTOX | Faunafri | Fishes of Iran | Fishtrace | GenBank(genome, nucleotide) | GloBI | GOBASE | Google Books | Google Scholar | Google | IGFA World Record | MitoFish | National databases | Otolith Atlas of Taiwan Fishes | PubMed | Reef Life Survey | Scirus | SeaLifeBase | Tree of Life | Wikipedia(Go, Search) | World Records Freshwater Fishing | Zoological Record

Estimates of some properties based on models

Phylogenetic diversity index (Ref. 82805):  PD50 = 0.7500   [Uniqueness, from 0.5 = low to 2.0 = high].
Trophic Level (Ref. 69278):  4.1   ±0.6 se; Based on diet studies.
Resilience (Ref. 69278):  Very Low, minimum population doubling time more than 14 years (Fec=1).
Vulnerability (Ref. 59153):  Very high vulnerability (81 of 100) .
Price category (Ref. 80766):   Medium.