Synbranchiformes, often called swamp eels, is an order of ray-finned fishes that are eel-like but have spiny rays, indicating that they belong to the superorder Acanthopterygii.
The swamp eels are a family (Synbranchidae) of freshwater eel-like fishes of the tropics and subtropics. Most species are able to breathe air and typically live in marshes, ponds and damp places, sometimes burying themselves in the mud if the water source dries up. They have various adaptations to suit this lifestyle; they are long and slender, they lack pectoral and pelvic fins, and their dorsal and anal fins are vestigial, making them limbless vertebrates. They lack scales and a swimbladder, and their gills open on the throat in a slit or pore. Oxygen can be absorbed through the lining of the mouth and pharynx, which is rich in blood vessels and acts as a "lung".
The Mastacembelidae are a family of fishes, known as the spiny eels. The Mastacembelids are part of the Order Synbranchiformes, the swamp eels, which are part of the Actinopterygii.
Acropomatidae is a family of fish in the order Perciformes, commonly known as lanternbellies. Acropoma species are notable for having light-emitting organs along their undersides. They are found in all temperate and tropical oceans, usually at depths of several hundred meters. There are about 32 species in as many as 9 genera, although some authorities recognise fewer genera than Fishbase does.
Notothenioidei is one of 19 suborders of the order Perciformes. The group is found mainly in Antarctic and Subantarctic waters, with some species ranging north to southern Australia and southern South America. Notothenioids constitute approximately 90% of the fish biomass in the continental shelf waters surrounding Antarctica.
Congiopodidae, commonly known as pigfishes, horsefishes and racehorses, is a family of ray-finned fish classified with in the order Scorpaeniformes. These fishes are native to the Southern Hemisphere.
The wreckfish are a family, Polyprionidae in the suborder Percoidei of the order Perciformes.
Grunters or tigerperches are ray-finned fishes in the family Terapontidae. This family is part of the superfamily Percoidea of the order Perciformes.
The sea chubs, also known as rudderfish and pilot fish and in Hawaiian as enenue or nenue, are a family, Kyphosidae, of fishes in the order Perciformes native to the Atlantic, Indian and Pacific Oceans usually close to shore in marine waters.
Stichaeidae, the pricklebacks or shannies, are a family of marine ray-finned fishes in the suborder Zoarcoidei of the order Scorpaeniformes. Most species are found in the North Pacific Ocean with a few in the North Atlantic Ocean.
Characodon is a genus of splitfins endemic to north–central Mexico. Two of the species are highly threatened and restricted to pools, ponds and springs in the upper San Pedro Mezquital River basin in Durango. The third species, C. garmani, was restricted to springs near Parras in Coahuila, but it became extinct when they dried out.
Oxyeleotris is a genus of sleeper gobies mostly restricted to Australia and New Guinea, though some are found in Southeast Asia.
Plectropomus, commonly known as the coral groupers, is a genus of marine ray-finned fish, groupers from the subfamily Epinephelinae, part of the family Serranidae, which also includes the anthias and sea basses. They are found in the Indo-Pacific region.
Indostomus is a genus of small fishes native to slow moving or stagnant freshwater habitats in Indochina. It is the sole genus of the monogeneric family Indostomidae, Long considered to be sticklebacks, within the order Gasterosteiformes, modern analyses place the Indostomids within the order Synbranchiformes, related to the spiny eels and swamp eels.
Bangana is a genus of fish in the family Cyprinidae, the carps and minnows. It is distributed across much of southern and eastern Asia. Species live mainly in the flowing waters of tropical and subtropical rivers.
Macrotrema caligans is a species of swamp eel native to Peninsular Malaysia and the Mae Nam Chao Praya basin in Thailand. The male guards a nest in a burrow. This species is the only known member of its genus.
Synbranchus is a genus of swamp eels native to Central and South America.
Apistops is a monotypic genus of wasp scorpionfishes belonging to the subfamily Apistinae in the family Scorpaenidae, the scorpionfishes and their relatives. Its only species is the short-armed waspfish, also known as the shortfinned waspfish or shortspine waspfish. This species is found in the Indian and Pacific waters from Papua New Guinea, the Arafura Sea and northwest Australia. It is a demersal fish found on the inshore area of the continental shelf at depths between 19 and 49 m. This species grows to a length of 19 centimetres (7.5 in) SL.
Belobranchus is a small genus of Eleotrid sleeper gobies from south-east Asia, New Guinea and the western Pacific.
The stripey, also known as the footballer or convict fish, is a species of ray-finned fish, a sea chub from the subfamily Microcanthinae which is part of the family Kyphosidae. It is native to the Pacific Ocean where it has a wide range. This species may be found in the aquarium trade. It is the only known member of its genus.
