Overview

Comprehensive Description

Biology

Feeds on Cyclops, terrestrial arthropods, filamentous algae and diatoms (Ref. 55619).
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Distribution

Range Description

Salmo akairos is endemic to Lake Ifni (31°2'N, 7°53'W, altitude: 2,300m) in Morocco.
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Africa: endemic to Lake Ifni in Morocco (Ref. 55619).
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Lake Ifni, Morocco.
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Physical Description

Morphology

Dorsal soft rays (total): 16; Analsoft rays: 12 - 13; Vertebrae: 56 - 58
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Size

Max. size

18.0 cm SL (male/unsexed; (Ref. 55619)); 15.04 cm SL (female)
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Diagnostic Description

Diagnosis: distinguished from all other Salmo species and archaic trouts by the combination of contrasting black and white leading edges on dorsal and anal fins and the absence of dark spots on the sides of the body; high number of dorsal fin pterygiophores (14-16): high number of gill rakers (19-23); large unpaired fins (Ref. 55619).Description: mouth terminal or slightly inferior; maxilla plus supramaxilla long and thin with convex to straight upper margin, usually extending to vertical through posterior margin of orbit, slightly longer in males; vomerine longitudinal tooth row extending to posterior edge of vomer; glossohyal with 5 pairs of strong teeth; body variable in depth, most specimens rather slender; fins large with acute tips; pectoral fin appendage present; caudal fin with 14 upper and 13 lower procurrent rays in addition to 19 principal rays; 2 epurals, 4-5 expanded neural spines (Ref. 55619). Coloration: overall dark coloration including different shades of brown and tint of green; dark violet parr marks (10-11) on side of body; sides of body ventrally lighter, from dusky yellow to dusky white; dorsal and anal fins with distinct white leading edges, followed by black; dorsal fin with numerous small black spots; side of head sometimes with single dark postocular blotch (Ref. 55619).
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Ecology

Habitat

Habitat and Ecology

Habitat and Ecology
It feeds on cyclops, terrestrial arthropods and filamentous algae and diatoms. It spawns in the lake. It reaches a length no larger than 20 cm.

Systems
  • Freshwater
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Environment

benthopelagic; freshwater
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Trophic Strategy

Feeds on Cyclops, terrestrial arthropods, filamentous algae and diatoms; females, caught in October, with eggs 4 mm in diameter suggest spawning occurs in late autumn (Ref. 55619).
  • Delling, B. and I. Doadrio 2005 Systematics of the trouts endemic to Moroccan lakes, with description of a new species (Teleostei: Salmonidae). Ichthyol. Explor. Freshwaters 16(1):49-64. (Ref. 55619)
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Conservation

Conservation Status

IUCN Red List Assessment


Red List Category
VU
Vulnerable

Red List Criteria
D2

Version
3.1

Year Assessed
2010

Assessor/s
Azeroual, A.

Reviewer/s
Kraïem, M. & Smith, K.

Contributor/s

Justification
Salmo akairos is endemic to Lake Ifni (less than 1 km2) in Morocco. The species spawns in the lake as it lacks suitable tributaries. The lake is 2,300 m high and has no permanent human habitation in its catchment, although the sparse vegetation is grazed by sheep and goats in the summer. The lake supplies water for extensive terrace agriculture around a village below the lake. There is no available evidence to suggest any current threats to the species, but there is a potential threat from the agriculture (water abstraction), introduced trout and sport fishing (Kraïem, M. pers .comm. 2007).
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Population

Population
No information available.

Population Trend
Unknown
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Threats

Major Threats
The species does not have any current threats. However it is potentially threatened by water abstraction as the lake currently supplies water for irrigation purposes to a nearby village and introduced alien species (rainbow trout).
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Vulnerable (VU) (D2)
  • IUCN 2006 2006 IUCN red list of threatened species. www.iucnredlist.org. Downloaded July 2006.
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Management

Conservation Actions

Conservation Actions
No information available.
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Relevance to Humans and Ecosystems

Benefits

Importance

fisheries:
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