Overview

Comprehensive Description

Biology

Lacustrine species, not reported to migrate to tributaries. Feeds on fish. (Ref. 59043).
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Distribution

Range Description

Austria: subalpine lakes in Danube drainage (Attersee, Traunsee, Fuschlersee). The same or similar species were apparently recorded in subalpine lakes in Switzerland (e.g. Vierwaldstätter [Rhine drainage]).
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Europe: Lakes in Austria. Probably extinct (Ref. 13696). Extinct (Ref. 59043). Doubtful species without type material.
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Lakes of Austria.
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Physical Description

Size

Max. size

70.0 cm SL (male/unsexed; (Ref. 59043))
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
Habitat:
Lacustrine, in deep water. Spawns along shores.

Biology:
Lacustrine species, not reported to migrate to tributaries. Only caught in May (hence the vernacular name) when it comes in to shallow waters, presumably to spawn. Eggs white, about 2 mm in diameter. Feeds on fishes.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
DD
Data Deficient

Red List Criteria

Version
3.1

Year Assessed
2008

Assessor/s
Freyhof, J. & Kottelat, M.

Reviewer/s
Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit)

Contributor/s

Justification
The nomenclature of this taxon (see taxonomic notes above) needs to be resolved before it can be properly assessed. The species is therefore listed as Data Deficient even though it may well be Extinct.
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Population

Population
No information.

Population Trend
Unknown
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Threats

Major Threats
Unknown
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Data deficient (DD)
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Management

Conservation Actions

Conservation Actions
No information.
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