Cetoscarus

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Cetoscarus
Masked Parrotfish (Cetoscarus bicolor)

Masked Parrotfish ( Cetoscarus bicolor )

Systematics
Spinefish (Acanthopterygii)
Perch relatives (Percomorphaceae)
Order : Labriformes
Family : Wrasse (Labridae)
Subfamily : Parrotfish (Scarinae)
Genre : Cetoscarus
Scientific name
Cetoscarus
Smith , 1956

Cetoscarus is a genus of parrotfish in the wrasse family.

features

Cetoscarus are moderately high-backed wrasses with a rounded head. In contrast to the other genera of the family with one row of scales , there are two longitudinal rows of scales on the Interoperculare . In addition, they are distinguished by the distinct dorsal eye spots (ocellae) of the young animals. There are 3 rows of scales on the cheeks. The number of gill spines is 20 to 24. The strong front teeth of the upper and lower jaw are fused together and form a tooth shield, the cutting edges are notched. The teeth are largely covered by the lips, there are no canines.

distribution

Cetoscarus bicolor occurs in the Red Sea , the natural range includes Djibouti , Egypt , Eritrea , Israel , Jordan , Saudi Arabia , Sudan and Yemen . Cetoscarus ocellatus iswidespreadin the Indo-Pacific . The distribution area extends from Somalia to South Africa , from there eastward to the Tuamotu Archipelago including eastern Australia and the Middleton Reef , north to southern Japan and south to western Australia. To Hawaii come Cetoscarus types not available.

habitat

Cetoscarus species only occur on coral reefs .

Taxonomy and systematics

Both Rosenblatt & Hobson (1969) and Schultz (1969) did not recognize Cetoscarus as an independent genus, but regarded it as a junior synonym of the genus Bolbometopon . Randall & Bruce (1983), however, saw the distinction into separate genera as certain, an opinion which Bellwood (1994) followed, although he sees Cetoscarus and Bolbometopon as closely related. Cetoscarus was considered monotypic , with Cetoscarus bicolor is the only way. The populations of the Indian Ocean and the Pacific Ocean are now considered Cetoscarus ocellatus conspecific recognized, but it could be on the molecular data on the population of the Indian Ocean to a separate species, Cetoscarus nigropinnis act.

Two types are currently recognized:

Individual evidence

  1. ↑ a b c d David R. Bellwood: A Phylogenetic Study of the Parrotfishes Family Scaridae (Pisces: Labroidei), with a Revision of Genera. 1994 in: Records of the Australian Museum Supplement 20. ISBN 0731036638 ( Online )
  2. ↑ Cetoscarus bicolor in the IUCN 2017-1 Red List of Threatened Species . Posted by:, JH Choat et al. , 2009. Retrieved July 1, 2017.
  3. ↑ a b Cetoscarus ocellatus in the Red List of Threatened Species of the IUCN 2017-1. Posted by: JH Choat et al. , 2009. Retrieved July 1, 2017.
  4. ↑ Cetoscarus at World Register of Marine Species (WoRMS)

Web links

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