| Bedotia | |
|---|---|
 | |
| Bedotia sp. | |
Scientific classification  | |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Atheriniformes |
| Family: | Melanotaeniidae |
| Subfamily: | Bedotiinae |
| Genus: | Bedotia Regan, 1903 |
| Type species | |
| Bedotia madagascariensis Regan, 1903 | |
Bedotia is a genus of the family Bedotiidae of fishes endemic to Madagascar.
This genus is monophyletic. [1] Little is known regarding phylogenetic interrelationships of the numerous populations of Bedotia of eastern Madagascar, and the genus is in need of systematic revision. One author synonymized B. longianalis and B. tricolor with B. geayi with no justification. It is apparent that several species of Bedotia exist, although many of these are new to science and await description, whereas the taxonomic status of many nominal species remains uncertain. [2]
A 2004 study supported three major, more or less geographically distinct, clades of Bedotia, one comprising species with distributions ranging from mid- to southeastern Madagascar (B. madagascariensis, B. geayi, and B. tricolor, plus four undescribed species), another including species restricted to eastern drainages north of the Masoala Peninsula (B. marojejy, plus four undescribed species), and a third comprising species with distributions extending from the Masoala Peninsula southward to the Ivoloina River (B. longianalis and B. masoala, plus three undescribed species). [3] These three clades of Bedotia are not readily separated based on coloration or pigmentation pattern.
There are currently nine recognized species in this genus: [4]
Additionally, several undescribed species have been rated by the IUCN:
Bedotia species are all under 10 centimetres (4 in) SL, extremely colorful, elongate, and somewhat laterally compressed atherinoid fishes that exhibit varying degrees of sexual dimorphism. [2] Except for coloration and pigmentation, Bedotia are morphologically conservative fishes. [3] All Bedotia are sexually dimorphic, with males exhibiting larger adult size, enhanced coloration and pigmentation, as well as pronounced development of the unpaired fins. [3]
Bedotia is exclusively freshwater, and members are found in small to medium-sized forested rivers and streams, and to a lesser degree in swamps and marshes, along the eastern slope of Madagascar. [2]
The genus is named after the Swiss zoologist Maurice Bedot (1859-1927) who was director of the Muséum d'histoire naturelle de Genève where the type of B. madagascarensis was lodged and who was editor of Revue Suisse de Zoologie in which Regan's description was published in 1903. [7]
The Bedotiinae are a subfamily of the family Melanotaeniidae, known as the Madagascar rainbowfish, Madagascan rainbowfish, or Malagasy rainbowfish due to their endemism to Madagascar. It includes two genera, Bedotia and Rheocles.
Rheocles is a genus of Madagascar rainbowfish. Rheocles has a restricted distribution, being found only in certain forested freshwater habitats in the central and eastern highlands of Madagascar including the Nosivolo River. The genus appears to feed almost exclusively on allochthonous material, primarily insects falling onto the water surface.
The red-tailed silverside, or zona is a species of Madagascar rainbowfish endemic to the Mananjary River drainage in Madagascar. It is threatened by habitat loss and introduced species. It has often been confused with the related B. madagascariensis, which is common in the aquarium trade. In addition to meristics, the two can be separated by the exact colour pattern on their tail fin and the distinct red spot on the lower jaw of breeding male B. geayi. 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.
Bedotia longianalis is a species of Madagascar rainbowfish endemic to Madagascar. Its natural habitat is the lower reaches of rivers and its range extends from the Ifontsy to the Anove and it is also found on Île Sainte-Marie, in north-eastern Madagascar. It was described in 1914 by Jacques Pellegrin from a type collected from a market in Mahambo.
Bedotia madagascariensis (zona) is a species of fish in the family Bedotiidae. It is endemic to Madagascar, where found in rivers and lakes between the Ivoloina River and the Manambolo Creek. It is commonly seen in the aquarium trade, where it often has been confused with the related B. geayi. It is threatened by habitat loss. It was described by Charles Tate Regan in 1903 with Madagascar given as the type locality, Regan deposited the type in the Muséum d'histoire naturelle de Genève and named the genus in honour of its director Maurice Bedot (1859-1927).
Bedotia marojejy is a freshwater species of fish in the Bedotiidae family. It is endemic to Madagascar and can be found in the Manantenina River. It is threatened by habitat loss. This species was described by Melanie Stiassny nd Ian Harrison in 2000 from types collected from the Manantenina River on the south eastern boundary of the Marojejy National Park, after which the species is named.
Bedotia masoala is a species of rainbowfish in the subfamily Bedotiinae. It is endemic to Madagascar. Its natural habitat is rivers. It is threatened by habitat loss. This species was described in 2001 by John S. Sparks from a type locality of the Ankavanana River on the Masoala Peninsula in Antalaha District.
Bedotia sp. nov. 'Bemarivo'is a species of fish in the Bedotiidae family. It is endemic to Madagascar. Its natural habitat is rivers. It is threatened by habitat loss.
Bedotia sp. nov. 'Garassa' is a species of fish in the Bedotiidae family. It is endemic to Madagascar. Its natural habitat is rivers.
Bedotia alveyi, the Makira rainbowfish, is a species of Madagascar rainbowfish from rivers and streams in the Makira region of Madagascar where it occurs in the tributaries of the Antainambalana and Vohimaro rivers. This species was described in 2010 by Christopher C. Jones, Leo Smith and John S. Sparks from types collected from a small stream north of Ambodivoankongy, in a tributary of the Antainambalana River in Toamasina Province. The specific name honours Mark Alvey of the Field Museum in Chicago.
Bedotia sp. nov. 'Manombo' is a species of fish in the Bedotiidae family. It is endemic to Madagascar. Its natural habitat is rivers. It is threatened by habitat loss.
Bedotia sp. nov. 'Namorona' is a species of fish in the Bedotiidae family. It is endemic to Madagascar. Its natural habitat is rivers. It is threatened by habitat loss.
Bedotia sp. nov. 'Nosivola' is a species of fish in the Bedotiidae family. It is endemic to Madagascar. Its natural habitat is intermittent rivers. It is threatened by habitat loss.
Bedotia albomarginata is a species of Madagascar rainbowfish from the Mananara and Reinana river basins in Madagascar. It is threatened by habitat loss. This species was described by John Sparks and Leila Rush in 2005 from types collected near the towns of Vondrozo and Vevembe from the Sahapindra River, which is a tributary of the Mananara River, in Fianarantsoa Province.
Bedotia tricolor is a species of Madagascar rainbowfish endemic to Madagascar. Its natural habitat is rivers. It is threatened by habitat loss. This species was described by Jacques Pellegrin in 1932 with the type locality given as a tributary of the Faraony River in the area of Manakara.
Ptychochromis is a genus of cichlids endemic to rivers and lakes in Madagascar. One species can also be seen in brackish water. Most species in this genus are threatened, and P. onilahy is probably extinct. Most reach a length of 12–15 cm (4.7–5.9 in), but P. insolitus only reaches 5.5 cm (2.2 in), while P. grandidieri and P. oligacanthus reach 21–25 cm (8.3–9.8 in).
Rheocles derhami is a species of rainbowfish in the subfamily Bedotiinae, the Madagascar rainbowfishes. It is endemic to the Ambalona River and Mangarahar River in Madagascar. Its natural habitat is rivers. It was described by Melanie Stiassny and Damaris Rodriguez in 1992 and was named in honour of the Swiss conservationist Patrick De Rham.
Rheocles vatosoa is a species of rainbowfish in the subfamily Bedotiinae, the Madagascar rainbowfishes. It is endemic to Madagascar. Its natural habitat is the Lokoho River basin. It is threatened by habitat loss.
Rheocles wrightae, is a species of rainbowfish in the subfamily Bedotiinae, the Madagascar rainbowfishes. It is endemic to Madagascar where its occurs in the Manambola River, near Anosibe. It is threatened by habitat loss. It was described by Melanie Stiassny in 1990 from a type locality given as "Sandrangato River, south of Moramanga". The specific name honours the American primatologist Patricia Wright.
Paretroplus loisellei is a vulnerable species of cichlid fish from the Mahanara River basin north of Sambava in northeastern Madagascar. Until its scientific description in 2011, this population was usually referred to as Paretroplus sp. nov. "Ventitry" or included in P. damii, which it resembles. It reaches about 15 centimetres (5.9 in) in length, and is threatened by habitat loss and introduced species. The similar named Ptychochromis loisellei is also restricted to the Mahanara River basin. The specific name honours Paul V. Loiselle, Emeritus Curator of Freshwater Fishes at the New York Aquarium and a researcher in, and campaigner for the conservation of, the freshwater fish of Madagascar.
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