Deepwater cisco
The deepwater cisco (Coregonus johannae) was one of the largest ciscoes in the Great Lakes. Its average length was 30cm (12 inches) and it was about 1.0 kilogram (2.2 pounds) in weight. Occurring only in Lakes Huron and Michigan, and inhabited waters between 50 and 150 metres deep, it was difficult to distinguish from other ciscoes and was possibly the same species as the shortjaw cisco (Coregonus zenithicus). The deepwater cisco was distinguished by usually having fewer than 33 gill rakers, relatively long pectoral fins, and unpigmented jaws. It was a silvery colour with a pink or purple lustre and a green or blue back. It spawned in August and September, earlier than most other ciscoes and, because of its large size, the deepwater Cisco was heavily fished commercially.
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primaryTopic
Deepwater cisco
The deepwater cisco (Coregonus johannae) was one of the largest ciscoes in the Great Lakes. Its average length was 30cm (12 inches) and it was about 1.0 kilogram (2.2 pounds) in weight. Occurring only in Lakes Huron and Michigan, and inhabited waters between 50 and 150 metres deep, it was difficult to distinguish from other ciscoes and was possibly the same species as the shortjaw cisco (Coregonus zenithicus). The deepwater cisco was distinguished by usually having fewer than 33 gill rakers, relatively long pectoral fins, and unpigmented jaws. It was a silvery colour with a pink or purple lustre and a green or blue back. It spawned in August and September, earlier than most other ciscoes and, because of its large size, the deepwater Cisco was heavily fished commercially.
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Coregonus johannae (englischer ...... amerikanischer Süßwasserfisch.
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Coregonus johannae es una espe ...... el orden de los Salmoniformes.
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Coregonus johannae was soort h ...... ire zeeprik in de Grote Meren.
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The deepwater cisco (Coregonus ...... by the introduced sea lamprey.
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كورجون الأعماق (الاسم العلمي:C ...... الكورجون من فصيلة سمك السلمون.
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深水白鮭,為輻鰭魚綱鮭形目鮭科的一種,原產於美國和加拿大間的 ...... 深水區,屬肉食性。曾為重要的經濟魚類,因過度捕撈而導致滅絕。
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722,642,051
assessors
World Conservation Monitoring Centre
binomial
Coregonus johannae
downloaded
2011-07-17
extinct
genus
species
title
Coregonus johannae
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Coregonus johannae (englischer ...... amerikanischer Süßwasserfisch.
@de
Coregonus johannae es una espe ...... el orden de los Salmoniformes.
@es
Coregonus johannae was soort h ...... ire zeeprik in de Grote Meren.
@nl
The deepwater cisco (Coregonus ...... s heavily fished commercially.
@en
كورجون الأعماق (الاسم العلمي:C ...... الكورجون من فصيلة سمك السلمون.
@ar
深水白鮭,為輻鰭魚綱鮭形目鮭科的一種,原產於美國和加拿大間的 ...... 深水區,屬肉食性。曾為重要的經濟魚類,因過度捕撈而導致滅絕。
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label
Coregonus johannae
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Coregonus johannae
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Coregonus johannae
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Deepwater cisco
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كورجون الأعماق
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深水白鮭
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Deepwater cisco
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