Collar carpet sharks
Collar carpet sharks | ||||||||||||
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Parascyllium ferrugineum |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Parascylliidae | ||||||||||||
Gill , 1862 | ||||||||||||
Genera | ||||||||||||
Collared carpet sharks (Parascylliidae) are slender, small, only 35 to 90 centimeters long sharks. The genus Parascyllium is endemic in the seas around Australia , Cirrhoscyllium lives in Japan , Taiwan and the Philippines .
features
The collar carpet sharks are all small sharks with a maximum body length of between 35 and 90 centimeters, which resemble the cat sharks (Scyliorhinidae) in their elongated habit and body proportions . Like these, they have large, cat-like eyes and a first dorsal fin that attaches behind the pelvic fin . Clear differences are the position of the mouth in front of the eyes and the narrow nasal pits. They differ from other sharks in the two dorsal fins and the anal fin, which lies far behind the second dorsal fin. The family is also characterized by a small pennant-like protrusion at the top of the caudal fin and the very small gill slits.
distribution and habitat
The range of collar carpet sharks is in the temperate to tropical areas of the western Pacific. The genus Parascyllium is endemic in the seas around Australia , Cirrhoscyllium lives off the coasts from China to Japan , Vietnam , Taiwan and the Philippines .
As a habitat, the sharks prefer the sea floor from the coast to depths of around 435 meters. They live on both muddy and sandy and stony ground.
Way of life
Little is known about the way of life of collar carpet sharks, although they are relatively common in some areas of their range. Their diet, likely due to their small size, consists primarily of small fish, as well as invertebrates such as crabs, octopuses, and other ground dwellers. For camouflage, they are able to adapt their color to the ground to a certain extent and dig themselves into the mud.
All species are likely to lay eggs and store their elongated and flattened eggs on the seabed.
Systematics
There are 2 genera with 8 species within the collar carpet sharks:
- Genus: Cirrhoscyllium Smith & Radcliffe in Smith, 1913
- Bartel-carpet shark ( Cirrhoscyllium expolitum Smith & Radcliffe in Smith, 1913 )
- Taiwanese carpet shark ( Cirrhoscyllium formosanum Teng , 1959 )
- Saddle Carpet Shark ( Cirrhoscyllium japonicum Kamohara, 1943 )
- Genus: Parascyllium Parascyllium Gill, 1862
- Collar carpet shark ( Parascyllium collare Ramsay & Ogilby , 1888 )
- Parascyllium elongatum Last & Stevens, 2008
- Rust-colored carpet shark ( Parascyllium ferrugineum McCulloch , 1911 )
- Parascyllium sparsimaculatum Goto & Last, 2002
- Collared carpet shark ( Parascyllium variolatum ( Duméril , 1853) )
Economic use
The collar carpet sharks have no fishing significance, but are regularly caught as bycatch by bottom-net fishing vessels. The population figures are unknown, but some species occur in intensively fished areas and their population could be greatly reduced due to the soil networks.
As aquarium fish, collar carpet sharks are only kept in a few larger show aquariums, where they are viewed as frugal and easy-to-keep species. The collar carpet shark ( Parascyllium variolatum ) in particular is considered to be an attractive shark for visitors due to its striking color. Breeding programs have not yet been established, but are considered possible due to the small size of the animals and their ease of keeping.
literature
- LJV Compagno: Sharks of the world. An annotated and illustrated catalog of shark species known to date. Volume 2. Bullhead, mackerel and carpet sharks (Heterodontiformes, Lamniformes and Orectolobiformes). FAO Species Catalog for Fishery Purposes. No. 1, Vol. 2. FAO Rome 2001; Pages 130-141. ( Full PDF )
Web links
- Parascylliidae on Fishbase.org (English)
- Collar carpet sharks on hai.ch