Salmo cettii — Details

Mediterranean Trout learn more about names for this taxon

Overview

Comprehensive Description

Biology

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Inhabits streams in hilly areas and lowland in karstic resurgences. Occurs in clear waters around 10-20° C, usually with dense subaquatic vegetation. Feeds mainly on aquatic insects. Spawns on gravel bottom in shallow water. Attains a maximum size of up to about 40 cm SL. Threatened due to water abstraction, overfishing and stocking of non-native trouts (Ref. 59043).
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Distribution

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Europe: Corsica, Sardinia, Sicily, Tyrrehenian basin of Italy from Magra drainage southward.
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Range Description

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Corsica, Sardinia, Sicily, Tyrrhenian basin of Italy from Magra drainage southward.
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Southern Europe: Corsica, Sardinia, Sicily, Italy.
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Physical Description

Size

Max. size

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40.0 cm SL (male/unsexed; (Ref. 59043))
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Diagnostic Description

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Distinguished from congeners in Mediterranean basin by having the following combination of characters: 9-13 parr marks in adults; caudal fin slightly emarginate; 20-60 small ocellated spots on flank (smaller than eye), some black, some brownish red (Ref. 59043).
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Ecology

Habitat

Environment

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demersal; freshwater
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Habitat and Ecology

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Habitat and Ecology
Habitat:
Streams in hilly areas; in lowland in karstic resurgences. Clear waters around 10-20°C, usually with dense subaquatic vegetation.

Biology:
Resident ecotype only. Spawns in January-March, on gravel bottom, in shallow water. Feeds mainly on aquatic insects.

Systems
  • Freshwater
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Conservation

Conservation Status

IUCN Red List Assessment

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Red List Category
NT
Near Threatened

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)

Justification
This species is found in Corsica, Sardinia, Sicily, and the Tyrrhenian basin of Italy from Magra drainage southward (streams in hilly areas; in lowland in karstic resurgences) where it is threatened by water abstraction, overfishing and stocking of non-native trouts (resulting in hybridisation and competition). It is suspected that in the past three generations (10 to 12 years) the population has declined by almost 30%, and it will continue to do so as water abstraction will most likely increase.
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Population

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Population
Declining.

Population Trend
Decreasing
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Threats

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Near Threatened (NT)
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Major Threats
Water abstraction, overfishing and stocking of non-native trouts (hybridisation and competition).
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Management

Conservation Actions

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Conservation Actions
There are local reserves set up specifically for the species in Italy.
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Wikipedia

Salmo cettii

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Salmo cettii, or the Mediterranean trout, is a species of trout, a freshwater fish in the Salmonidae family.[1] It lives in the Mediterranean region, in Algeria, Corsica, Sardinia, Sicily and on the Italian mainland in the Magra drainage and further south. It is a non-migratory fish which lives in streams and in karstic resurgences.[2] It is smaller than 40 cm in length. It is sometimes referred to Salmo trutta macrostigma, which depending on concept is either a more widespread Mediterranean taxon, or a taxon endemic to Algeria.[2]

References

  1. ^ "Salmo cettii". Fishbase. http://www.fishbase.gr/Summary/SpeciesSummary.php?id=49461. Retrieved 2009-03-31.
  2. ^ a b Freyhof, J. & Kottelat, M. 2008. Salmo cettii. In: IUCN Red List of Threatened Species. Version 2010.1. Downloaded on 05 May 2010.
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