The Kessler's gudgeon is a European species of freshwater fish in the family Cyprinidae. It is found in the Danube and Vistula drainage basins, including parts of Poland, Austria, the Czech Republic, Ukraine, Bulgaria, Romania, Moldova, Hungary, Croatia, Bosnia and Herzegovina, Serbia, Montenegro, Slovakia, and Slovenia. It is a small fish of no economic or sporting importance. It was at one time classified as Gobio kessleri.
The nkhomo-benga peacock, also known as the new yellow regal peacock, is a species of haplochromine cichlid which is endemic to Lake Malawi. This species is threatened by capture for the aquarium trade.
Glossogobius hoesei, Hoese's goby, is a species of goby endemic to the Ayamaru Lakes in West Papua, Indonesia where it can be found on muddy or gravel substrates as well as in small tributary streams. This species can reach a length of 7 centimetres (2.8 in) SL. The specific name honours the ichthyologist Douglass Fielding Hoese of the Australian Museum in Sydney who has made an important contribution to the study of fishes in the order Gobiiformes.
The ornate paradisefish or spotted gourami, is a species of gourami endemic to Sri Lanka. It is the only recognized species in its genus.
Padogobius bonelli, the Padanian goby, is a species of true goby from the family Gobiidae native to rivers of Croatia, Italy, Slovenia, and Switzerland, where it is usually found in areas with gravel substrates or dense vegetation along the edges. Males of this species can reach a length of 8.6 centimetres (3.4 in) TL while females only reach 7.5 centimetres (3.0 in) TL. This species' specific name honours the Italian naturalist Franco Andrea Bonelli (1784-1830), who had originally described this species as Gobius fluviatilis without realizing that this name was already being used for a different goby species, the monkey goby, which had been described by Pallas in 1814.
Pomatoschistus canestrinii, Canestrini's goby, is a species of goby native to fresh and brackish waters along the Adriatic coasts where it is known to occur from the Po delta, Italy to Neretva, Croatia. It has also been introduced in Lake Trasimeno, Italy. This species prefers areas with sand or mud substrates in lagoons, lakes and medium-sized to large-sized rivers. This species can reach a length of 5.5 centimetres (2.2 in) TL. The specific name honours the Italian biologist Giovanni Canestrini (1835-1900).
The pindani is a species of cichlid endemic to Lake Malawi preferring areas with sandy substrates and nearby rocks where the males establish their territories. This species can reach a length of 6.7 centimetres (2.6 in) SL. It can also be found in the aquarium trade. The specific name of this fish honours the aquarium fish trader Ross Socolof (1925-2009).
Schismatogobius deraniyagalai, the redneck goby, is a species of goby native to India and Sri Lanka. This species inhabits river shallows, where it prefers areas with substrates that range from sand to gravel in which it can hide when threatened. This species can reach a total length of 4.5 cm (1.8 in). It can also be found in the aquarium trade. The specific name honours the Sri Lankan paleontologist and zoologist Paul E. P. Deraniyagala (1900-1976) for his contribution to the natural history of Sri Lanka.
Oxynoemacheilus evreni is a species of Cypriniformes fish in the genus Oxynoemacheilus. It is widespread and locally abundant within the Ceyhan drainage where it can be found in streams and rivers which have a gravel substrate in a relatively fast to very fast current. It may have undergone a slight reduction in population due to the construction of dams but it is able to tolerate some habitats which have been altered by humans.
Schistura hingi is a species of ray-finned fish in the most speciose genus of stone loaches, Schistura. It occurs in the Pearl River basin of southeastern China and the coastal drainages in central Vietnam, it probably also occurs in the costal drainages of northern Vietnam too where it inhabits medium-sized rivers and streams where a substrate of rocks and gravel lies in riffles. The specific name honours a specimen collector, Ah Hing, whose efficiency in collecting for the botanist-ornithologist Geoffrey Herklots of Hong Kong University, Hing's patience and skill enabled Herre "to get many specimens”.
Schistura poculi is a species of stone loach in the genus Schistura. This species is currently thought to occur in the basins of the Mekong, Salween and Chao Praya rivers in Myanmar, Thailand and Laos. However, these may refer to more than one species, in which case the name S. poculi belongs to the population in the Chao Praya. It can be found in streams with moderately fast to fast currents among riffles where there are substrates which vary from gravel to stone. The specific name poculi means "bowl" and refers to the type locality, Doi Angkon in Thailand with angkon meaning "crow's bowl".
Schistura sokolovi is a species of ray-finned fish, a stone loach, in the genus Schistura from Vietnam. It occurs in medium-sized to small streams with a current and riffles, over gravel and sandy substrates. The specific name honours the Russian zoologist Vladimir Evgenievich Sokolov (1928-1988) for his contribution to the knowledge of the zoology of central Vietnam.
Schizopygopsis younghusbandi is a species of ray-finned fish endemic to Tibet. It occurs in the Yarlung Tsangpo River drainage and in endorheic lakes in its vicinity. Schizopygopsis younghusbandi grows to about 50 cm (1.6 ft) in total length.
Oxynoemacheilus bergianus, the Kura sportive loach, is a species of ray-finned fish in the genus Oxynoemacheilus. This species is found in Lake Urumiyeh and Namak Lake basins in Iran, in the southern Caspian basin from Kura east to the Sefid-Rud drainage. It can also be found in the headwaters of Tigris in Turkey, Iraq and in Karoun, Iran as well as those of the Euphrates in Turkey and possibly in Syria and Iraq. It lives in fast flowing streams and rivers with gravel and rocky substrates and does not tolerate impoundments, dam construction having been identified as a major potential threat to this species.
Pavoclinus smalei, the Deep-reef klipfish, is a species of clinid currently only known to exist near the mouth of the Storms River in South Africa where it was found over gravel substrates at depths of from 18 to 22 metres. This species can reach a length of 5.5 centimetres (2.2 in) TL. The name honours the author Malcolm J. Smale.
Pomatoschistus knerii, Kner's goby, is a species of goby native to the western basin of the Mediterranean Sea and the Adriatic Sea. This species occurs in areas with soft substrates near to rocks or beds of seagrass. The specific name most likely honours the Austrian ichthyologist Rudolf Kner (1810-1869), who was a friend of the author Franz Steindachner.
The Weedsucker is a species of clingfish found along the coasts of Namibia and South Africa, from Lüderitz to the mouth of the Kei River. This species grows to a maximum length of 3.5 centimetres (1.4 in) Total Length. This species is the only known member of its genus and was described by James L.B. Smith in 1943 with the type locality being described as 10 miles (16 km) west of East London, east of Igoda, South Africa.
Rhyacichthys guilberti is a goby belonging to the family Rhyacichthyidae. This fish only occurs in the Northern Province of New Caledonia and in Vanuatu. It is found in only two rivers. Its maximum standard length of about 240 mm. Its population on New Caledonia was estimated at less than 400 individuals, but it is now thought to have been extirpated from that island, it remains common on Vanuatu.
Pseudogobiopsis lumbantobing is a species of goby from the subfamily Gobionellinae which is found in Java and Sumatra where it occurs in freshwater rivers and streams at altitudes of 5–22 metres (16–72 ft), with substrates made up of sand, gravel, rock and boulders and where there may be growths of algae and aquatic macrophytes. This species had been traded in the European aquarium trade since 2001.
Aulonocara koningsi is a species of haplochromine cichlid which is endemic to Lake Malawi. It is restricted to the waters around Mbenji Island and is therefore endemic to Malawi too. It is common in the restricted area in which it occurs but collection for the aquarium trade does not seem to have affected the population.
