Common name: Oceanic Whitetip Shark

Scientific name: Carcharhinus longimanus (Poey, 1861)
Oceanic Whitetip Shark in the sea near the Brother Islands in EgyptOceanic Whitetip Shark (Carcharhinus longimanus), Cat Island Bahamas
Oceanic Whitetip Shark (Carcharhinus longimanus), Cat Island BahamasOceanic Whitetip Shark (Carcharhinus longimanus), Cat Island Bahamas

General Information

The Oceanic Whitetip Shark, scientifically known as Carcharhinus longimanus, is a large pelagic shark species found in tropical and subtropical oceans around the world. With its distinctive long, rounded fins tipped with white, this shark is easily recognizable and has captured the interest of marine enthusiasts and conservationists alike. Historically, the Oceanic Whitetip was one of the most common pelagic sharks, but its populations have declined significantly due to overfishing and bycatch.

The Oceanic Whitetip Shark is known for being a top predator in its ecosystem, playing a crucial role in maintaining the balance of marine life. It is valued for its ecological significance and has been the subject of numerous studies aimed at understanding pelagic ecosystems. However, its declining numbers have raised concerns among conservationists, highlighting the need for sustainable fishing practices and better protection measures.

Physically, the Oceanic Whitetip Shark is characterized by its robust body, large pectoral and dorsal fins with white tips, and a distinctive white pattern on the tips of its fins. Its body is typically a grayish-brown color, with a lighter underside. This species can be confused with other whitetip species, such as the Triaenodon obesus, but can be distinguished by its larger size and pelagic nature.

Details

Recommended minimum tank volume
100,000 liter (26,000 gallons)
Salinity
S.G. 1.023 to 1.026
Temperature
20 to 28 °C (68 to 82 °F)
Acidity
pH 8 to 8.5
Average size
3 m (10′)
Care level
Very difficult
Diet
Carnivore Feeds on fish, cephalopods, and occasionally seabirds
Social
Solo Solitary hunter, occasionally seen in groups when food is abundant
Reefsafe
No
Aggression
Aggresive Bold and inquisitive, sometimes mistaken for aggression
Captive bred
No
Conservation statusSource: IUCN Red List
ExtinctThreatenedLeastConcern

Taxonomy

  1. Kingdom
    Animals
    Animalia
  2. Phylum
    Chordates
    Chordata
  3. Class
    Sharks and Rays
    Elasmobranchii
  4. Order
    Ground Sharks
    Carcharhiniformes
  5. Family
    Requiem sharks
    Carcharhinidae
  6. Genus
    Requiem Sharks
    Carcharhinus
  7. Species
    Oceanic Whitetip Shark
    Carcharhinus longimanus (Poey, 1861)
  8. Synonyms
    Carcharias insularum Snyder, 1904
    Carcharias longimanus (Poey, 1861)
    Carcharias obtusus Garman, 1881
    Carcharinus longimanus (Poey, 1861)
    Pterolamiops budkeri Fourmanoir, 1961
    Pterolamiops longimanus (Poey, 1861)
    Pterolamiops magnipinnis Smith, 1958
    Squalus longimanus Poey, 1861
  9. Source: GBIF | Global Biodiversity Information Facility

Care

Due to its large size and pelagic lifestyle, the Oceanic Whitetip Shark is not suitable for home aquariums. It requires vast open spaces to swim and thrive, which can only be provided in large public aquariums or in the wild. Conservation efforts focus on protecting its natural habitats and mitigating threats from fisheries.

Diet and Feeding

The Oceanic Whitetip Shark is a carnivorous species, preying on a variety of marine life including fish, cephalopods, and occasionally seabirds. In captivity, they are fed a diet of fish and squid, but replicating their natural diet is challenging due to their wide-ranging hunting behavior.

Behavior and Compatibility

Oceanic Whitetip Sharks are known for their bold and inquisitive nature. They are solitary hunters but may be seen in groups when food is abundant. Their curious nature can sometimes be mistaken for aggression, especially when humans are in the water. These sharks are not suitable for mixed-species tanks due to their size and predatory nature.

Reproduction

The Oceanic Whitetip Shark is viviparous, meaning it gives birth to live young. Females typically give birth to litters of 1-15 pups after a gestation period of about 12 months. Little is known about their mating behavior in the wild, but conservation efforts aim to protect breeding grounds and ensure the survival of young sharks.

Conservation Status

The Oceanic Whitetip Shark is currently listed as "Critically Endangered" on the IUCN Red List due to significant population declines. Overfishing and bycatch in tuna and swordfish fisheries are major threats to this species. International efforts, including CITES Appendix II listing, aim to regulate trade and protect this iconic shark from further decline.