Classification / Names
Populärnamn | synonymer | Catalog of Fishes(Släkte, Arter) | ITIS | CoL | WoRMS | Cloffa
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Gobiiformes (Gobies) >
Eleotridae (Bully sleepers)
Etymology: Eleotris: The name of a Nile fish, eleotris (Ref. 45335); sahanaensis: Named after the Sahana River, type locality, where many species of Eleotris were found (Ref. 123271).
Environment: milieu / climate zone / djupintervall / distribution range
Ekologi
; sötvatten bottenlevande. Tropical
Africa: Sahana and Andrepona rivers in Madagascar (Ref. 123271).
Size / Vikt / Age
Könsmognad: Lm ? range ? - ? cm
Max length : 4.4 cm SL hane/ej könsbestämd; (Ref. 123271)
Short description
Bestämningsnycklar | Morfologi | Morfometri
Taggstrålar i ryggfenan (totalt) : 7; Mjukstrålar i ryggfenan (totalt) : 8 - 9; Taggstrålar i analfenan: 1; Mjukstrålar i analfenan: 8 - 9. Diagnosis: Eleotris sahanaensis is distinguished by second and fourth suborbital free neuromast rows on cheek extending ventrally past horizontal row 'd' ('2.4' pattern), row 'os' not connected with row 'oi' at ventro-posterior margin of operculum ('open' pattern); 15 pectoral fin rays; no teeth on vomer; 54-55 scales in lateral series and 29-30 scales in predorsal series (Ref. 123271). Within the pattern '2.4' group, E. sahanaensis differs from E. acanthopomus in having 15 pectoral fin rays vs. 16-17, 10 scales in zigzag series vs. 11-14, and 29-30 scales in predorsal series vs. 30-42; it differs from E. vomerodentata by the absence of teeth in the vomer vs. presence; it differs from E. pellegrini by a smaller head length, 30-32% of standard length vs. 31-37%, and fewer scales in zigzag series, 10 vs. 10-12 (Ref. 123271).
Life cycle and mating behavior
Könsmognad | Reproduktion | Lek | Ägg | Fecundity | Larver
Mennesson, M.I. and P. Keith, 2020. Eleotris (Teleostei: Eleotridae) of the Indian Ocean: an overview with the description of three new species. Cybium 44(3):185-203. (Ref. 123271)
IUCN Red List Status (Ref. 130435: Version 2024-2)
Threat to humans
Harmless
Human uses
Verktyg
Special reports
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Estimates based on models
Phylogenetic diversity index (Ref.
82804): PD
50 = 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00832 (0.00345 - 0.02005), b=3.10 (2.91 - 3.29), in cm total length, based on LWR estimates for this Genus-body shape (Ref.
93245).
Trofisk nivå (Ref.
69278): 3.3 ±0.3 se; based on size and trophs of closest relatives
Resiliens (Ref.
120179): Hög, lägsta populationsfördubblingstid mindre än 15 månader (Preliminary K or Fecundity.).
Fishing Vulnerability (Ref.
59153): Low vulnerability (10 of 100).
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