The big-scale sand smelt is a species of fish in the family Atherinidae. It is a euryhaline amphidromous fish, up to 20 cm in length.
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 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.
Chirostoma humboldtianum, the shortfin silverside, is a species of neotropical silverside endemic to Mexico. It reaches a maximum length of around 20 cm. This species was described as Atherina humboldtiana by Achille Valenciennes in 1835 with a type locality of "Mexico". Valenciennes gave it its specific name in honour of the Prussian explorer Alexander von Humboldt (1769-1859).
The glass blue-eye is a species of fish in the subfamily Pseudomugilinae. It is endemic to Papua New Guinea where it is only known to occur in a few small creeks adjacent to a 15–20 kilometres (9.3–12.4 mi) stretch of the Ok Tedi Mine supply road between the settlements of Kiunga and Tabubil in the Upper Fly River system close to the frontier with Irian Jaya. This species has a mainly transparent body with silvery gill covers and belly, there are black spots on the margins of the scales and there are black markings on the fins and lateral line, with the fins being shaded with yellow, with the exception of the transparent pectoral fins. It attains a standard length of 3 centimetres (1.2 in). This species was described by Gerald R. Allen in 1983 and its specific name honours the site biologist at the Ok Tedi Mine, David Balloch, for the support and assistance he gave Allen.
Oxylapia is a genus of freshwater fish in the family Cichlidae. It contains the single species Oxylapia polli, known locally as the songatana. It is an endangered species, endemic to the Marolambo Rapids in the Nosivolo River in east-central Madagascar. It is threatened by habitat loss and sedimentation caused by deforestation. The only other monotypic cichlid genus in Madagascar is Katria, and it is restricted to the same region as Oxylapia. In 2010, the Nosivolo River was designated as a Ramsar Site. The Oxylapia is the conservation flagship species for the district capital Marolambo.
Pachypanchax sparksorum is a species of Aplocheilid killifish endemic to Madagascar where it is found in the Anjingo River and streams feeding into the Ankofia River. Its natural habitat is rivers. The specific name of this fish honours the ichthyologist John S. Sparks of the United States National Museum and his wife Karen Riseng Sparks, they collected many of the type series.
Pachypanchax arnoulti is a species of aplocheilid killifish endemic to Madagascar. Its natural habitat is rivers and lakes. It is threatened by habitat loss and invasive species. The specific name of this fish honours the French ichthyologist and herpetologist Jacques Arnoult (1914-1995) in recognition of his contributions to the knowledge of Madagascar's fish fauna. It was described by Paul V. Loiselle in 2006 with the type locality given as "Swamp draining into tributary stream of Ikopa River, flowing parallel to RN-4 at Antanimbray village, 17°10'79"S, 46°50'97"E, Betsiboka River drainage, Madagascar, elevation 246 meters".
The damba is a species of cichlid.
The kotso is a species of cichlid fish from northwestern Madagascar. Currently rated as data deficient by the IUCN, this species is virtually unknown. The only known specimen is a juvenile that was collected more than 80 years ago. It is not entirely clear where it was collected, but likely from the Maintimaso River or Lake Ambanja, which both are part of the Betsiboka River drainage. Erroneously, the name P. petiti has often been applied to members of a different species, P. dambabe. The specific name honours the French zoologist and anatomist Georges Petit (1892-1973) of the Muséum national d’Histoire naturelle, who collected type.
Ptychochromis loisellei is a species of cichlid from the Mahanara River basin north of Sambava in northeastern Madagascar. It remains common within its small range, but it is threatened by habitat loss and introduced species. It reaches about 11.9 centimetres (4.7 in). The similar named Paretroplus 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.
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 pellegrini is a species of rainbowfish from the subfamily Bedotiinae. It is endemic to Madagascar. Its natural habitat is rivers. This species was described by John Treadwell Nichols and Francesca Raimonde La Monte in 1931 from a type collected "one day west of Andapa." by Austin L. Rand and P. A. DuMont who were part of the "Archbold Expedition" to Madagascar of 1929–1931. R. pellegrini was not then recorded until the 21st Century when populations were found in the area of the type locality. The specific name honours the French ichthyologist Jacques Pellegrin (1873-1944).
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.
Teramulus kieneri, the Keiner's silverside or vily, is a species of silverside endemic to Madagascar where it is found in rivers around on the eastern coast. This species was described by J.L.B. Smith in 1965 with the type locality given as the coastal swamps near Tamatave. It has since been found in other areas of the island, including the basin of the Nosivolo River and in the Bemarivo River. Smith gave this species the specific name keineri to honour the French fisheries scientist, André Kiener, who assisted in the collection of the type in 1961, although it was initially reported as Atherinomorus duodecimalis. It is the type species of the genus Teramulus.
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.
Membras martinica, the rough silverside, is a species of Neotropical silverside from the family Atherinopsidae, it is the type species of the genus Membras.
The bluemouth cichlid is a species of cichlid fish that is endemic to the Usumacinta River basin in southern Mexico and Guatemala, where it is widely distributed in rivers, creeks and lakes. This species is the only known member of its genus. The specific name honours the French cichlid specialist Jean Claude Nourissat (1942-2003), who collected type of this species. It reaches up to 22 cm (8.7 in) in total length.
Pachypanchax patriciae is a species of killifish from the family Aplocheilidae. It is endemic to Madagascar where it occurs in the basins of the Mananjeba, Mahavavy du Nord, Ifasy, Manehoko and Ampandra rivers in the north west of the island. The specific name of this fish honours the Malagasy conservationist Patricia Yazgi (1946-2006), who ran the charity Friends of Fishes and who supported efforts to document and conserve the freshwater fish fauna of Madagascar. This species appears to feed mainly the adults and nymphs of terrestrial insects and on the larvae of aquatic insects and its most important predators are fish-eating birds and dragonfly nymphs. It may, however, be threatened by introduced alien fishes in some areas.
