Results for “river”
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Lepisosteus oculatusSpotted Gar
Winchell, 1864
Max length1250mm SL49in SLTanknot recordedTemp12–20°C54–68°FpH6.0–8.0Known from Great Lakes Erie and Michigan with distribution extending south through the Mississippi River basin to the Gulf of Mexico drainages where it's said to occur between the lower Apalachicola River in Florida and the Nueces River in Texas. It may also be found in the Rio Grande which forms the border between Mexico and the United States further south where records include Falcon International Reservoir, for example.

Leporinus copelandii
Steindachner, 1875
Max length200mm SL8in SLTank180 × 60cm72 × 24inTemp20–28°C68–82°FpH6.0–7.5Type locality is giev as 'Rio Parahyba and tributaries at Mendez; Juiz de Fora; River Doce; River São Matheos; Rio Jequitinhonha; Rio Quenda at Santa Cruz', all of which pertain to localities within the Paraíba do Sul and Doce river systems in Minas Gerais, Espírito Santo, rio de Janeiro and São Paulo states, southeastern Brazil.

Leptobotia pellegrini
Fang, 1936
Max length200mm SL8in SLTank120 × 45cm48 × 18inTemp20–24°C68–75°FpH6.5–8.0Described from Sichuan province, southwestern China (presumably the upper Yangzte River, aka Chang Jiang, drainage) and also known from parts of the Pearl River (Zhu Jiang) basin in Guangxi Autonomous Region. The latter area is one of the most populous and industrialised in China meaning much of the main river channel is now highly polluted. Its relatively wide distribution probably explains why it's commoner in the aquarium hobby than the similar-looking...

Opsarius dogarsinghiManipur Baril
Hora, 1921
Max length85mm SL3.3in SLTank150 × 60cm60 × 24inTemp18–24°C64–75°FpH6.0–7.5Described from 'Etok stream near Chanderkhong, southern watershed of the Naga Hills, Manipur, Assam', located within the Chindwin River basin in northern India. The Chindwin is the major tributary of the Ayeyarwady/Irrawaddy River and most of it flows within Myanmar although two of its own tributaries, the Manipur and Yu rivers, originate in the Indian states of Manipur and Nagaland.

Opsarius ornatus
Sauvage, 1883
Max length110mm SL4in SLTank150 × 60cm60 × 24inTemp18–26°C64–79°FpH6.0–8.0Type locality is 'Mé-Nam River, Thailand', with 'Mé-Nam' having been considered an older name for the Chao Phraya river in central and western Thailand prior to this species' redescription by Tejavej (2012). In fact 'menam' is the Thai word for 'river' and thus could refer to any drainage, and B. ornatus is restricted to...

Oryzias celebensisCelebes Ricefish
Weber, 1894
Max length45mm SL1.8in SLTank45 × 30cm18 × 12inTemp23–27°C73–81°FpH7.0–9.0Described from the Maros River (Salo Maros), southwestern Sulawesi, Indonesia and subsequently recorded from rivers and streams throughout the southwestern arm of the island including Lake Tempe (Danau Tempe), plus the Mota Talau River, East Timor state on the nearby island of Timor. More recently Herder and Chapuis (2010) reported it to be more widespread on Sulawesi, with new records pertaining to an unnamed small stre...

Tucanoichthys tucano
Géry & Römer, 1997
Max length17mm SL0.7in SLTank45 × 30cm18 × 12inTemp20–28°C68–82°FpH4.0–6.5Known only from the rio Uaupés system in Brazil with type locality 'brook emptying into Igarape Yavuari River, tributary of River Uaupés, upper Negro River basin, 0°14'31"N, 68°03'48"W, Amazonas, Brazil'. The full extent of its range is unclear but additional populations may exist.

Acrossocheilus monticola
Günther, 1888
Max length150mm SL6in SLTanknot recordedTempnot recordedpHnot recordedApparently endemic to the upper Yangtze River basin, China. Type locality is 'mountain-stream fiowing into the Ichang gorge of the Yangtsze River'.

Amblyrhynchichthys micracanthus
Ng & Kottelat, 2004
Max length200mm SL8in SLTanknot recordedTempnot recordedpHnot recordedNative to the Mekong River drainage in Laos (where Vientiane province represents the upper limit of its range), Thailand, Cambodia, and Vietnam, and the Tapi, Chao Phraya, and Mae Klong systems in Thailand. Type locality is '22 kilometers upstream from Phnom Penh, Tonle Sap River, Kandal Province, Cambodia'.

Aphyosemion bitaeniatumTwo-Striped Lyretail
Ahl, 1924
Max length45mm SL1.8in SLTanknot recordedTemp24–30°C75–86°FpH5.0–6.5This species is widely-distributed in lowland, coastal regions of Togo, Benin and Nigeria as far as the Cross River delta, and occurs at some inland localities along the lower Niger River. Populations in Cameroon, Equatorial Guinea and Gabon are now considered to represent other species.

Aphyosemion bivittatumTwo-Banded Lyretail
Lönnberg, 1895
Max length50mm SL2.0in SLTanknot recordedTempnot recordedpHnot recordedType locality is close to a waterfall on the Ndian River in southwestern Cameroon, and appears restricted to the coastal plains either side of the border between Cameroon and Nigeria, including the Korup and Cross River National Parks.

Aphyosemion cognatumRed-Spotted Lyretail
Meinken, 1951
Max length50mm SL2.0in SLTanknot recordedTempnot recordedpHnot recordedThe type material was derived from a commercial shipment of fishes from Leopoldville, now Kinshasa, Democratic Republic of Congo, and presumed to have been collected in the vicinity. The precise extent of its distribution unknown but appears extensive in the middle and lower Congo regions, with specimen collected from Lac Fwa (Sankuru River drainage, a Congo River tributary), many hundreds of kilometres west of Kinshasa, identified as belonging to this species.

Aphyosemion decorseiDecorse's Lyretail
Pellegrin, 1904
Max length50mm SL2.0in SLTanknot recordedTempnot recordedpHnot recordedType locality is the settlement of Bessou, Lobaye prefecture, Central African Republic, which lies within the Ubangi (also spelled Oubangui) River basin. The Ubangi is a major tributary of the Congo River and this species appears restricted to its middle section and thus probably extends into northern Republic of Congo and Democratic Republic of Congo.

Aphyosemion herzogiHerzog's Lyretail
Radda, 1975
Max length45mm SL1.8in SLTanknot recordedTemp15–20°C59–68°FpH5.0–6.5Described from northern Gabon, close to 'Zoumoukou', which is seeen on modern maps as 'Zomoko', but has a much wider distribution extending into Equatorial Guinea (upper parts of some Benito River tributaries), and southern Cameroon (Ntem River), as well as the Ivindo and Okano drainages in Gabon, the latter pair both tributaries of the much larger Ogooué system.

Badis tuivaiei
Vishwanath & Shanta, 2004
Max length85mm SL3.3in SLTank60 × 30cm24 × 12inTemp20–24°C68–75°FpH6.5–7.5This fish has yet to appear in the aquatic trade and only been exported in extremely limited numbers to date. Specimens collected from the Wahumiam River close to the settlement of Shella Bholaganj by Peter Cottle and Andrew Rao in 2006 were initially considered an undescribed species and referred to as B. sp.'Wahumiam River' or B. sp. 'terracotta', but later found to match B. tuivaiei in terms of morphology, meristics, etc. (S. van der Voort, pers. comm.).

Bagarius rutilus
Ng & Kottelat, 2000
Max length1000mm SL39in SLTanknot recordedTemp18–23°C64–73°FpH6.0–7.5Known from the from the Red River in northern Vietnam and Yunnan province, southern China, plus the Thái Bình, Sông Kỳ Cùng, Mã and Lam rivers in Vietnam and possibly the Nam Xam and Nam Ma drainages in Laos. Type locality is 'Market in Hanoi, Vietnam'.

Bangana devdevi
Hora, 1936
Max length250mm SL10in SLTanknot recordedTempnot recordedpHnot recordedKnown with certainty from the Irrawaddy River system in Manipur state, India, and Myanmar, and the Salween watershed in eastern Myanmar and northwestern Thailand. Records from the Red River basin in Vietnam appear questionable. Type locality is 'Burma: Myitkyina District: Mali Hka basin: Phungin Hka;'.

Barilius gatensisMalabar Baril
Valenciennes, 1844
Max length130mm SL5in SLTank150 × 60cm60 × 24inTemp18–26°C64–79°FpH6.0–7.5This species is traded very occasionally, sometimes under the alternative vernacular names of 'river baril, 'river carp-baril', or 'striated hill trout'. It can be told apart from congeners by the following combination of characters: 1 pair of minute rostra...

Betta gladiator
Tan & Ng, 2005
Max length90mm SL3.5in SLTank90 × 30cm36 × 12inTemp22–27°C72–81°FpH4.0–6.0Presumed endemic to the geographically-isolated Maliau basin, a roughly circular plateau enclosed by hills in Sabah state, Malaysia, Borneo. The Maliau River is part of the much larger Kinabantangan watershed, Malaysia's second longest river. The type series was collected from heath forest alongside 'Puntius' sealei and Hemibagrus cf. baramensis in acidic water with a pH of 4.2-4.8. Adult individuals were spaced around a metre apa...

Betta uberis
Tan & Ng, 2006
Max length36mm SL1.4in SLTank45 × 30cm18 × 12inTemp22–27°C72–81°FpH4.0–6.0The majority of records pertain to an area sandwiched between the lower Arut and Kumai rivers, south of the towns of Pangkalan Bun and Kumai in Kalimantan Tengah (Central Kalimantan) province, Borneo, Indonesia. Addditional collections have taken place in the Sampit river basin to the east, and several hundred kilometres further north in Sukadana district Kalimantan Barat (West Kalimantan) province. Type locality is 'Indonesia: Borneo: Kalimantan Tengah: Arut basin: Pankalanbun', with the specimens having been obtained from the aquarium trade.