Heteroscarus acroptilus
| Heteroscarus acroptilus | ||||||||||||
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Heteroscarus acroptilus |
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| Systematics | ||||||||||||
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| Scientific name of the genus | ||||||||||||
| Heteroscarus | ||||||||||||
| Castelnau , 1872 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Heteroscarus acroptilus | ||||||||||||
| ( Richardson , 1846) |
Heteroscarus acroptilus ( Syn .: Odax acroptilus , English rainbow cale ) belongs to the wrasse tribus Odacini , whichare called cales in their native Australia and New Zealand .
description
Heteroscarus acroptilus becomes 25 cm long and is very colorful - the coloring of the enclosed illustration can also play in yellow, brown, pink and blue; the scaly cheeks are most likely white. The foremost dorsal fin rays are elongated and partly erectable forward, which is also expressed in the specific epithet acroptilus .
- Fin formula : D XV / 11, AI / 13, P 14, VI / 4, C 14.
The formula part VI / 4 is characteristic of Odacini, but overall it is very rare in spiny fins . The caudal fin is fan-shaped, the caudal peduncle is very short. The spine consists of 11 trunk and 13 tail vertebrae. The Branchiostegal membrane is supported by five rays. It has about 34 rows of scales along the sides; the sideline is complete.
Way of life
It lives on small epilithic, phytic and benthic animals (snails, echinoderms, crabs, worms, mussels, etc. on rocks, algae (seaweed)), which is why it prefers to live in seagrass meadows ( amphibolis : especially A. griffithii , posidonia ) and stops at rocky edges with brown algae - "forests" (e.g. Sargassum , Ecklonia ; up to a depth of approx. 15 m). He hardly eats parts of plants, algae and detritus in small quantities.
development
The pelagic eggs develop into spreading larvae, on which the fins emerge in the order CDAPV and which then approach the coastal substrate from a length of 5.6 millimeters. The teeth of young fish are still free and only grow together to form the cutting plates over time.
Occurrence
Heteroscarus acroptilus can be found from Beacon Island ( Western Australia - Indic ) to Newcastle ( New South Wales - Pacific ) and also on the north coast of Tasmania at subtropical sea temperatures (10-18 ° C). It is considered a good food fish and can be found (freshly caught) on the menu of some restaurants on the southern coast of Australia.
Remarks
- ↑ cale, kale (English), "leaf cabbage", seems to originally refer to Odax pullus , an olive-green seaweed eater on the north coast of New Zealand that even has green bones. Phycophagus (i.e. seaweed eaters) are also Olisthops cyanomelas and Odax cyanoallix .
- ↑ acroptilus (Greek with Latinized ending) means "front with feathers".
Individual evidence
- ↑ GA Hyndes, AJ Hendrick, LD MacArthur and E. Stewart: Differences in the species- and size-composition of fish assemblages in three distinct seagrass habitats with Differing plans and meadow structure. Marine Biology, 142, 6, pp. 1195-2006, 2003 ( doi: 10.1007 / s00227-003-1010-2 )
- ↑ LD MacArthur and GA Hyndes: Varying foraging strategies of Labridae in seagrass habitats: Herbivory in temperate seagrass meadows? Journal of Experimental Marine Biology and Ecology, 340, 2, pp. 247-258, 2007. doi : 10.1016 / j.jembe.2006.09.017
literature
- MF Gomon and JR Paxton: A revision of the Odacidae, a temperate Australian-New Zealand labroid fish family. Indo-Pacific Fishes, 8, 1985, p. 33
- FJ Neira, AG Miskiewicz and T. Trnski: Larvae of temperate Australian fishes: laboratory guide for larval fish identification. University of Western Australia Press, 1998, pp. 330-331
Web links
- Heteroscarus acroptilus on Fishbase.org (English)
- Heteroscarus acroptilus inthe IUCN 2013 Red List of Threatened Species . Posted by: Russell, B., Clements, KD, Choat, JH, Rocha, LA, Myers, R., Lazuardi, ME, Muljadi, A., Pardede, S. & Rahardjo, P., 2009. February 2014.