Bluethroat triggerfish
| Bluethroat triggerfish | ||||||||||||
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Bluethroat triggerfish ( Xanthichthys auromarginatus ) |
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Xanthichthys auromarginatus | ||||||||||||
| ( Bennett , 1832) |
The blue-throated triggerfish ( Xanthichthys auromarginatus ) lives in the western Indo-Pacific from East Africa to Hawaii , north to the Ryūkyū Islands and south to the Cocos Islands and New Caledonia . It lives in small groups in the upper areas of high currents, steep outer reefs with a rich invertebrate fauna, mostly above a depth of 20 meters. Bluethroat triggerfish, like all members of the genus Xanthichthys , feed on zooplankton , especially copepods .
features
The blue-throated triggerfish has an oval, greenish, bluish or gray body. The males have a bright blue throat, which the German name refers to, as well as dorsal , anal and caudal fins outlined in yellow , which is indicated by the species epithet of the scientific name. The fish are 20 to 22 centimeters long.
Fin formula : dorsal III / 27–30, anal 25–27
literature
- Baensch, Patzner: Mergus Sea Water Atlas Volume 6 Non-Perciformes (non-perch-like) . Mergus-Verlag, Melle, ISBN 3-88244-116-X
- Andreas Vilcinskas : Marine animals of the tropics. A guide for divers, snorkelers and aquarists. Over 700 lower animals, fish, reptiles and mammals. Stuttgart 2000, ISBN 3-440-07943-0
- Ewald Lieske, Robert F. Myers: Coral fish of the world . Year Top Special Verlag Hamburg, ISBN 3-86132-112-2
- Dieter Eichler, Robert F. Myers: Coral fish Indo-Pacific . Jahr-Verlag GmbG & Co., ISBN 3-86132-225-0
Web links
- Blue-throated trigger fish on Fishbase.org (English)