Bedotiidae

Life-forms

Superregnum: Eukaryota
Cladus: Unikonta
Cladus: Opisthokonta
Cladus: Holozoa
Regnum: Animalia
Subregnum: Eumetazoa
Cladus: Bilateria
Cladus: Nephrozoa
Superphylum: Deuterostomia
Phylum: Chordata
Subphylum: Vertebrata
Infraphylum: Gnathostomata
Megaclassis: Osteichthyes
Superclassis/Classis: Actinopterygii
Classis/Subclassis: Actinopteri
Subclassis/Infraclassis: Neopterygii
Infraclassis: Teleostei
Megacohors: Osteoglossocephalai
Supercohors: Clupeocephala
Cohors: Euteleosteomorpha
Subcohors: Neoteleostei
Infracohors: Eurypterygia
Sectio: Ctenosquamata
Subsectio: Acanthomorphata
Divisio/Superordo: Acanthopterygii
Subdivisio: Percomorphaceae
Series: Ovalentaria
Superordo: Atherinomorphae
Ordo: Atheriniformes
Subordo: Atherinoidei

Familia: Bedotiidae
Genera: Bedotia - Rheocles
Name

Bedotiidae
Synonyms

Bedotiinae (in Melanotaeniidae)

References

Nelson, J.S. 2006. Fishes of the World, fourth edition. John Wiley, Hoboken, 624 pp. ISBN 0-471-25031-7. ISBN 978-0-471-25031-9. Reference page.

Links

Genera of Bedotiidae (including synonyms) in Catalog of Fishes, Eschmeyer, W.N., Fricke, R. & van der Laan, R. (eds.) 2023. Catalog of Fishes electronic version.
Bedotiidae and its species in FishBase,
Froese, R. & Pauly, D. (eds.) 2023. FishBase. World Wide Web electronic publication, www.fishbase.org, version 02/2023.

Vernacular names
čeština: Gavúnkovití

Bedotiinae are a subfamily of the rainbowfish family Melanotaeniidae, commonly known as the Madagascar rainbowfish, Madagascan rainbowfish, or Malagasy rainbowfish due to their endemism to Madagascar. It includes two genera, Bedotia and Rheocles.
Anatomy and morphology

As the common name rainbowfish implies, they are generally colorful fishes. Bedotiins are elongated, laterally compressed, and rarely exceed 100 mm in standard length. Bedotiins exhibit varying degrees of sexual dimorphism, which is quite pronounced in some species.[1] The anal fin spine is weak or absent.[2]
Distribution

The entire family of Bedotiidae is endemic to Madagascar.[1] Bedotiins occur exclusively in freshwater environments and are distributed in small to medium-sized forested rivers and streams, occasionally in swamps and marshes, spanning nearly the entire eastern slope of Madagascar (R. derhami is recorded from a westward draining Sofia River basin in the northeast of the island).[1][3]

Bedotiin fishes are under severe threat because of rapid deforestation and habitat modification throughout most of their range. Because Bedotia and Rheocles are generally the first to exhibit population declines or disappear from areas where habitat is moderately to highly disturbed or degraded, they are reliable indicators of ecosystem health and stability.[4]
Taxonomy

This subfamily includes the two genera Bedotia and Rheocles, with at least 16 species.[2] This subfamily is monophyletic.[1][5] This group is considered by Nelson, 2016 Fishes of the World to be a subfamily of the family Melanotaeniidae.[6] When treated as a family it has been placed by some authorities in a suborder Melanotaenioidei which includes the sister groups Bedotiidae and Melanotaeniidae, as well as Pseudomugilidae (including Telmatherininae).[1] The sister-group relationship between these taxa is most parsimoniously explained by the break-up of Gondwana.[1]
References

Sparks, John S.; Smith, W. Leo (2004). "Phylogeny and biogeography of the Malagasy and Australasian rainbowfishes (Teleostei: Melanotaenioidei): Gondwanan vicariance and evolution in freshwater" (PDF). Molecular Phylogenetics and Evolution. 33 (3): 719–734. doi:10.1016/j.ympev.2004.07.002. PMID 15522799.
Nelson, Joseph S. (2006). Fishes of the World. John Wiley & Sons, Inc. ISBN 0-471-25031-7. OCLC 224053746.
Sparks, John S.; Rush, Leila M. R. (2005). "A new rainbowfish (Teleostei: Melanotaenioidei: Bedotiidae) from the southeastern highlands of Madagascar, with comments on the biogeography of Bedotia" (PDF). Zootaxa. 1051: 39–54. doi:10.11646/zootaxa.1051.1.4.
Sparks, John S.; Schaefer, S. A. (2001). Schaefer, S. A. (ed.). "Bedotia masoala: A New Species of Atherinoid Rainbowfish (Teleostei: Bedotiidae) from the Masoala Peninsula, Northeastern Madagascar". Copeia. 2001 (2): 482–489. doi:10.1643/0045-8511(2001)001[0482:BMANSO]2.0.CO;2. S2CID 86218849.
Stiassny, Melanie L. J. (August 7, 1990). "Notes on the Anatomy and Relationships of the Bedotiid Fishes of Madagascar, with a Taxonomic Revision of the Genus Rheocles (Atherinomorpha: Bedotiidae)" (PDF) (2979): 1–33.
J. S. Nelson; T. C. Grande; M. V. H. Wilson (2016). Fishes of the World (5th ed.). Wiley. pp. 358–363. ISBN 978-1-118-34233-6.