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Wroclaw zoo 16 bedocja madagaskarska.jpg
Scientific classification edit
Kingdom: Animalia
Phylum: Chordata
Class: Actinopterygii
Order: Atheriniformes
Family: Melanotaeniidae
Genus: Bedotia
B. geayi
Binomial name
Bedotia geayi

The red-tailed silverside, or zona (Bedotia geayi) is a species of Madagascar rainbowfish endemic to the Mananjary River drainage in Madagascar. It is threatened by habitat loss and introduced species.[1] It has often been confused with the related B. madagascariensis, which is common in the aquarium trade.[3][4] In addition to meristics, the two can be separated by the exact colour pattern on their tail fin (males of both typically have red in the tail) and the distinct red spot on the lower jaw of breeding male B. geayi (lacking in B. madagascariensis).[3][4] B. geayi was described in 1907 by Jacques Pellegrin from a type collected by the pharmacist and natural history collector Martin François Geay (1859-1910), who Pellegrin honoured with its specific name.[5]


  1. ^ a b Ravelomanana, T.; Sparks, J.S.; Loiselle, P.V. (2020). "Bedotia geayi". IUCN Red List of Threatened Species. 2020: e.T2719A176087193. doi:10.2305/IUCN.UK.2020-3.RLTS.T2719A176087193.en. Retrieved 15 November 2021.
  2. ^ Froese, Rainer; Pauly, Daniel (eds.) (2014). "Bedotia geayi" in FishBase. April 2014 version.
  3. ^ a b SeriouslyFish: Bedotia madagascarensis. Retrieved 3 July 2014.
  4. ^ a b Loiselle, P.V.; and Rodriguez, D. (2007). A new species of Bedotia (Teleostei: Atherinomorpha: Bedotiidae) from the Rianila drainage of Eastern Madagascar, with redescriptions of Bedotia madagascariensis and Bedotia geayi. Zootaxa 1520: 1-18.
  5. ^ Christopher Scharpf & Kenneth J. Lazara (14 March 2019). "Order ATHERINIFORMES: Families BEDOTIIDAE, MELANOTAENIIDAE, PSEUDOMUGILIDAE, TELMATHERINIDAE, ISONIDAE, DENTATHERINIDAE and PHALLOSTETHIDAE". The ETYFish Project Fish Name Etymology Database. Christopher Scharpf and Kenneth J. Lazara. Retrieved 30 June 2019.


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