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Rheocles alaotrensis (Pellegrin, 1914)

Katrana
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Rheocles alaotrensis
Female picture by Loiselle, P.V.


Madagascar country information

Common names: Antsiriva, Katrana
Occurrence: endemic
Salinity: freshwater
Abundance: abundant (always seen in some numbers) | Ref: Loiselle, P.V. and M.L.J. Stiassny, 2003
Importance: | Ref:
Aquaculture: | Ref:
Regulations: | Ref:
Uses: live export: yes;
Comments: Known from Lake Alaotra (Ref. 39832, 56178), Maningory drainage (Ref. 39832, 56178), Rianila drainage (Ref. 39832, 56178), Mangoro River (Ref. 56178), and Betsiboka River (Ref. 56178). Also Ref. 4114, 13333.
National Checklist:
Country Information: https://www.cia.gov/library/publications/resources/the-world-factbook/geos/ma.html
National Fisheries Authority:
Occurrences: Occurrences Point map
Main Ref: Sparks, J.S. and M.L.J. Stiassny, 2003
National Database:

Common names from other countries

Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Atheriniformes (Silversides) > Bedotiidae (Madagascar rainbowfishes)
Etymology: Rheocles: Greek, rheos = stream + Greek, kles, kleis = straits.
  More on author: Pellegrin.

Environment: milieu / climate zone / depth range / distribution range Ecology

Freshwater; pelagic.   Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Africa: central east Madagascar, Lake Alotra, Maningory River system; Anjozorobe and in the tributaries of Betsikiboka on the west slope of Madagascar.

Size / Weight / Age

Maturity: Lm ?  range ? - ? cm
Max length : 14.0 cm TL male/unsexed; (Ref. 4114)

Biology     Glossary (e.g. epibenthic)

Life cycle and mating behavior Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Maugé, L.A., 1986. Atherinidae. p. 277-279. In J. Daget, J.-P. Gosse and D.F.E. Thys van den Audenaerde (eds.) Check-list of the freshwater fishes of Africa (CLOFFA). ISNB, Brussels; MRAC, Tervuren; and ORSTOM, Paris. Vol. 2. (Ref. 4114)

IUCN Red List Status (Ref. 130435)

  Endangered (EN) (B1ab(i,iii,v)); Date assessed: 01 July 2016

CITES (Ref. 128078)

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

  Harmless




Human uses

FAO(Publication : search) | FishSource |

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Estimates based on models

Phylogenetic diversity index (Ref. 82804):  PD50 = 0.5078   [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01122 (0.00514 - 0.02450), b=3.04 (2.87 - 3.21), in cm Total Length, based on all LWR estimates for this body shape (Ref. 93245).
Trophic level (Ref. 69278):  3.0   ±0.3 se; based on size and trophs of closest relatives
Fishing Vulnerability (Ref. 59153):  Low vulnerability (10 of 100).