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Brachaeluridae

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Brachaeluridae

Blind sharks
Temporal range: 182–0Ma Middle Toarcian to Present.
[1]
Brachaelurus waddi
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Chondrichthyes
Subclass: Elasmobranchii
Order: Orectolobiformes
Family: Brachaeluridae
Applegate, 1974
Genera

Brachaelurus
Heteroscyllium

Sharks portal

The Brachaeluridae, or blind sharks, are a small family of sharks in the order Orectolobiformes. There are only two species of blind shark, both of which are native to shallow coastal waters up to 110 metres (360 ft) depth, off the eastern coast of Australia.[2]

They are distinguished by the presence of long barbels, large spiracles, and groove around the nostrils. They have two dorsal fins, placed close together on the back, and a relatively short tail. Blind sharks have fully functioning eyes but their name was given to them because when caught by anglers these eyes are closed(Probably to protect them).[2]

Blind sharks feed on small fish, cuttlefish, sea anemones, and crustaceans. The female retains the eggs in her body until they hatch (ovoviviparity), during which time the embryos feed solely on the egg yolk.[2]

Genera and species

There are just two species of blind shark, each in their own genus:

In aquaria

Both the blind shark and the Coclough's shark have been successfully kept in home aquaria.[5] In captivity they can live to be 20 years old.[5] They are well suited to this sort of personal shark husbandry because of their small adult sizes and "predilection for tight spaces."[5] However, one drawback is that they are inactive during the daytime and will spend most of the daylight hours hiding in artificial caves provided by the aquarist.[5] Brachaelurids have been successfully reared in home aquaria on diets of fresh and frozen seafood fed 3 times weekly.[5] Waters at 64-76 degrees F have been found to be most conducive to the health of these fish.[5] Brachaelurids have been known to consume any of their tankmates that can be successfully swallowed.Blind sharks have been induced to breed in captivity.[5] The Sydney Aquarium has successfully maintained an entire breeding colony of blind sharks.[5]

References

  • Froese, Rainer, and Daniel Pauly, eds. (2011). FishBase. February 2011 version.

See also

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