|Scientific Name:||Salvelinus profundus (Schillinger, 1901)|
|Taxonomic Notes:||S. profundus was known definitely only from Lake Constance where it is now extinct. Although a local population is now sometimes recorded as tiefseesaibling, this is not the original one but a phase of S. umbla.|
|Red List Category & Criteria:||Extinct ver 3.1|
|Assessor(s):||Freyhof, J. & Kottelat, M.|
|Reviewer(s):||Bogutskaya, N., & Smith, K. (IUCN Freshwater Biodiversity Unit)|
The species was endemic to Lake Costance and was a commercial species in the 1960s but it is thought to have gone extinct in the 1970's when the eutrophicaton peaked, which is believed to have impacted egg development. It has not been recorded since and there have been several surveys in the past 10 years specifically find the species as the conditions in the lake have improved.
|Range Description:||Lake Constance (Switzerland, Germany, Austria).|
Regionally extinct:Austria; Germany; Switzerland
|Range Map:||Click here to open the map viewer and explore range.|
|Population:||Last recorded in the 1970's.|
|Habitat and Ecology:||Habitat: |
Deep water (below 80 m). Lives and feeds on bottom.
When brought to surface in nets, usually appears with a greatly bloated belly because of expansion of gas bladder resulting from reduction of water pressure. Possibly spawns on an extended period between July-February (or maybe even at all seasons), at depths around 60-80 m, on pebble bottom in most lakes. Feeds mainly on cocoons of Turbellaria and copepods.
|Use and Trade:||Now extinct.|
|Major Threat(s):||Eutrophication which peaked in 1979. Natural reproduction in Salvelinus species is said to have almost stopped during the period of high eutrophication as the eggs could no longer develop in the low-oxygen substrates.|
|Citation:||Freyhof, J. & Kottelat, M. 2008. Salvelinus profundus. The IUCN Red List of Threatened Species 2008: e.T135539A4141058.Downloaded on 20 November 2017.|
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