Sweeper

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Sweepers are small, tropical marine (occasionally brackish) perciform fish of the family Pempheridae. Found in the western Atlantic Ocean and Indo-Pacific region, the family contains about 26 species in two genera. One species (Pempheris xanthoptera) is the target of subsistence fisheries in Japan, where the fish is much enjoyed for its taste. Sweepers are occasionally kept in marine aquaria.

Description

Deeply keeled, compressed bodies and large eyes typify sweepers, their form somewhat like hatchetfish; both cycloid and ctenoid scales may be present. The small, short dorsal fin begins before the body's midpoint and may have four to seven spines; the anal fin is extensive and usually has three spines. The mouth is subterminal and strongly oblique. Species of the genus Parapriacanthus have much more cylindrical bodies.

Some species possess photophores. All but the curved sweeper (Pempheris poeyi) possess a gas bladder. The largest species is the common bullseye (Pempheris multiradiata) at 28 cm (11 in) long; most other species measure 16 cm (6.3 in) or less. Colouration is relatively subdued.

Behaviour

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Red Sea dwarf sweepers (Parapriacanthus guentheri)

Characteristically shallow water, schooling fish (especially as juveniles), sweepers are nocturnal and seek shelter under ledges or in the caves, nooks, and crannies of reefs or eroded, rocky shorelines during the day. They are often found sharing these hiding places with cardinalfishes and bigeyes, also nocturnal species. At night, sweepers forage for zooplankton, their primary food.

At least one species, the small-scale bullseye (Pempheris compressa) of Australia, is known to enter coastal estuaries whilst young.

Genera

The following genera are classified within the family Pempheridae:[2][3]

Timeline

References

  1. ^ Richard van der Laan; William N. Eschmeyer & Ronald Fricke (2014). "Family-group names of Recent fishes". Zootaxa. 3882 (2): 001–230.
  2. ^ Eschmeyer, William N.; Fricke, Ron & van der Laan, Richard (eds.). "Genera in the family Pempheridae". Catalog of Fishes. California Academy of Sciences. Retrieved 9 April 2020.
  3. ^ Froese, Rainer, and Daniel Pauly, eds. (2014). "Pempheridae" in FishBase. February 2014 version.
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Sweeper: Brief Summary

provided by wikipedia EN

Sweepers are small, tropical marine (occasionally brackish) perciform fish of the family Pempheridae. Found in the western Atlantic Ocean and Indo-Pacific region, the family contains about 26 species in two genera. One species (Pempheris xanthoptera) is the target of subsistence fisheries in Japan, where the fish is much enjoyed for its taste. Sweepers are occasionally kept in marine aquaria.

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Description

provided by World Register of Marine Species
Distribution: western Atlantic, Indian and Pacific Oceans. Body deep; compressed. Maxillae not extending beyond center of eye. Smooth preorbital. Eyes big, lacking adipose lid. Dorsal fin short, with origin before middle of body. Dorsal fin with 4-7 graduated spines; soft rays 7-12. Anal fin with usually 3 (very rarely 2) spines and 17-45 soft rays. Scales along lateral line usually 40-82; the tubes usually short and wide. Long gillrakers, usually 25-31. A few species with luminiscent organs. Pyloric caeca 9 or 10. Swim bladder present in all but one species. Vertebrae 25 (10 + 15). To about 30 cm maximum length.
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bibliographic citation
MASDEA (1997).
contributor
Edward Vanden Berghe [email]