Gudgeon is the common name for a miniature barbel and a number of small freshwater fish of the families Butidae, Cyprinidae, Eleotridae or Ptereleotridae. Most gudgeons are elongate, bottom-dwelling fish, many of which live in rapids and other fast moving water however many can be found in still waters
The zander, sander or pikeperch, is a species of ray-finned fish from the family Percidae, which also includes perch, ruffe and darter. It is found in freshwater and brackish habitats in western Eurasia. It is a popular game fish and has been introduced to a variety of localities outside its native range. It is the type species of the genus Sander.
Eleotridae is a family of fish commonly known as sleeper gobies, with about 34 genera and 180 species. Most species are found in the tropical Indo-Pacific region, but there are also species in subtropical and temperate regions, warmer parts of the Americas and near the Atlantic coast in Africa. While many eleotrids pass through a planktonic stage in the sea and some spend their entire lives in the sea; as adults, the majority live in freshwater streams and brackish water. One of its genera, Caecieleotris, is troglobitic. They are especially important as predators in the freshwater stream ecosystems on oceanic islands such as New Zealand and Hawaii that otherwise lack the predatory fish families typical of nearby continents, such as catfish. Anatomically, they are similar to the gobies (Gobiidae), though unlike the majority of gobies, they do not have a pelvic sucker.
The western carp gudgeon is one of several carp gudgeon species. Carp gudgeons are very small perciform fish found in the Australian Murray-Darling River system, mainly in lowland environments, but some have been observed in upland environments. They are often found in small creeks, as well as billabongs and the edges of larger rivers. They prefer water 1 to 2 m deep with aquatic weed and structure provided by rocks or sunken timber.
The common bream, also known as the freshwater bream, bream, bronze bream, carp bream or sweaty bream, is a European species of freshwater fish in the family Cyprinidae. It is now considered to be the only species in the genus Abramis.
Gobio is a genus of typical gudgeons, ray-finned fish in the family Cyprinidae many of which are endemics of south-eastern Europe. Members of the genus are usually small fish, rarely longer than 10 cm.
Gobio hettitorum, the Taurus gudgeon or Anatolian gudgeon, is a species of gudgeon, a small freshwater fish in the family Cyprinidae. It is found only in the 15 km long Gökdere stream and formerly in the Ereğli marshes in Turkey. It is listed on the IUCN Red List of Threatened Species and is threatened by habitat loss, the Ereğli marshes dried out in the 1990s which caused the extirpation of this species there, but not by pollution.
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 Gobiiformes are an order of fish that includes the gobies and their relatives. The order, which was previously considered a suborder of Perciformes, is made up of about 2,211 species that are divided between seven families. Phylogenetic relationships of the Gobiiformes have been elucidated using molecular data. Gobiiforms are primarily small species that live in marine water, but roughly 10% of these species inhabit fresh water. This order is composed chiefly of benthic or burrowing species; like many other benthic fishes, most gobiiforms do not have a gas bladder or any other means of controlling their buoyancy in water, so they must spend most of their time on or near the bottom. Gobiiformes means "goby-like".
The peacock gudgeon or peacock goby is a tropical freshwater species of fish in the family Eleotridae that is endemic to the eastern part of Papua New Guinea. It can be found in schools hovering over the substrate in rivers and ponds. This species can reach a length of 7.5 cm (3.0 in). It is currently the only known member of its genus.
Abbottina rivularis, also known as the Chinese false gudgeon or the Amur false gudgeon, is a species of ray-finned fish in the family Cyprinidae, the carps and minnows. It is native to China, Korea, and Japan, but it has been introduced to the Mekong River Basin and is also known from rivers in Turkmenistan.
Gobio gobio, or the gudgeon, is a species of fish in the family Cyprinidae. This small fish is widely distributed in fresh-water streams and lakes across central and temperate Eurasia.
The Soldatov's gudgeon is a species of gudgeon, a small freshwater fish in the family Cyprinidae. It is found in Asia in the Amur River drainage in Russia and China, on the Sakhalin Island, and in Lake Buir in Mongolia. It is a demersal fish, up to 12.0 cm long.
Gobio macrocephalus, commonly known as bighead gudgeon, is a species of gudgeon, a small freshwater fish in the family Cyprinidae. It is found in Asia in South Korea, also in the Tumen River, China. It is a freshwater demersal fish, up to 14 centimetres (5.5 in) long.
The Thessaly gudgeon is a species of gudgeon, a small freshwater in the family Cyprinidae. It is found in the Pineios and Karla Lake drainages in Greece.
The Eber gudgeon is a species of gudgeon, a small freshwater in the family Cyprinidae. It is found in streams flowing to Lakes Eber and Akşehir in central Anatolia. The species previously occurred in the lakes themselves but have been extirpated due to the lakes drying out and from pollution.
Gobio kizilirmakensis is a species of gudgeon, a small freshwater in the family Cyprinidae. It is found in the Kızılırmak River basin in Turkey.
The Skadar gudgeon is a species of gudgeon, a small freshwater fish in the family Cyprinidae. It is found in the Lake Skadar basin in Montenegro and Albania.
Goby is a common name for many species of small to medium sized ray-finned fish, normally with large heads and tapered bodies, which are found in marine, brackish and freshwater environments.