Patagonia slimy fish
| Patagonia slimy fish | ||||||||||||
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Patagonian slimy fish ( Eleginops maclovinus ) |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Eleginopsidae | ||||||||||||
| Gill , 1862 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Eleginops | ||||||||||||
| Gill , 1862 | ||||||||||||
| Scientific name of the species | ||||||||||||
| Eleginops maclovinus | ||||||||||||
| ( Cuvier , 1830) |
The Patagonian slimy fish ( Eleginops maclovinus ) is a representative of the Antarctic fish (Notothenioidei) found in the southeastern Pacific and southwestern Atlantic , on the southern tip of South America . Its distribution area extends from Valparaíso in Chile over the coast of Tierra del Fuego to the coast of Patagonia .
features
The Patagonian slimy fish becomes 90 centimeters long. Its elongated body is bluish, brown on top and yellowish on the belly. The two dorsal fins, supported by seven to eight spines and 23 to 27 soft rays, are gray, the caudal fin brown and yellowish at the end. The anal fin is also brown.
Way of life
The Patagonian blimp lives migratory along the coasts of southern South America and also goes into freshwater. The water in its habitat has a temperature of 4 ° C in winter to 10 ° C in summer. The fish is sluggish but can become very fast for a short time in the event of a threat or to catch prey. Patagonian mucous fish feed carnivorously on all kinds of invertebrates. In animals caught in the Río Valdivia , the amphipods of the suborder Corophiidea accounted for 97% of the food consumed. The Patagonian slimy fish are probably protandric hermaphrodites . In one study, the sex ratio of the 41 to 45 cm long specimens was 1: 1. Females predominated in the fish over 46 cm long and males in the under 40 cm long.
Systematics
The species was formerly part of the Antarctic cod family (Nototheniidae) and is now part of the monotypic family Eleginopsidae. It is not closely related to the slimy fish (Blenniidae).
literature
- Joseph S. Nelson : Fishes of the World. Wiley, New York 2006, ISBN 0-471-25031-7 .
Individual evidence
- ↑ Fernandez, Calvo, Wakeling, Vanella, Johnston: Escape performance in the sub-Antarctic notothenioid fish Eleginops maclovinus. Polar Biology, pp. 914-920, doi : 10.1007 / s00300-002-0435-2
- ^ Parves et al .: Limnetic feeding in Eleginops maclovinus (Valenciennes, 1830) in the Valdivia River, Chile. Limnetic feeding in Eleginops maclovinus (Valenciennes, 1830) in the Valdivia River, Chile. PDF ( page no longer available , search in web archives ) Info: The link was automatically marked as defective. Please check the link according to the instructions and then remove this notice.
- ↑ Calvo, Morriconi, Rae, Roman: Evidence of protandry in a subantarctic notothenid, Eleginops maclovinus (Cuv. & Val., 1830) from the Beagle Channel, Argentina. Journal of Fish Biology, Volume 40 Issue 2, pages 157-164 doi : 10.1111 / j.1095-8649.1992.tb02563.x
Web link
- Patagonian blenny on Fishbase.org (English)