Common name: Oceanic Whitetip Shark
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
- CITES
- Appendix II
- IUCN Red List
- EXEWCRENVUNTLC
Taxonomy
- KingdomAnimalsAnimalia
- PhylumChordatesChordata
- ClassSharks and RaysElasmobranchii
- OrderGround SharksCarcharhiniformes
- FamilyRequiem sharksCarcharhinidae
- GenusRequiem SharksCarcharhinus
- SpeciesOceanic Whitetip SharkCarcharhinus longimanus (Poey, 1861)
- SynonymsCarcharias insularum Snyder, 1904Carcharias longimanus (Poey, 1861)Carcharias obtusus Garman, 1881Carcharinus longimanus (Poey, 1861)Pterolamiops budkeri Fourmanoir, 1961Pterolamiops longimanus (Poey, 1861)Pterolamiops magnipinnis Smith, 1958Squalus longimanus Poey, 1861
- 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.