Pomacentridae is a family of ray-finned fish, comprising the damselfishes and clownfishes. This family were formerly placed in the order Perciformes but are now regarded as being incertae sedis in the subseries Ovalentaria in the clade Percomorpha. They are primarily marine, while a few species inhabit freshwater and brackish environments. They are noted for their hardy constitutions and territoriality. Many are brightly colored, so they are popular in aquaria.
The cutlassfishes are about 45 species of predatory fish in the family Trichiuridae found in seas throughout the world. Fish of this family are long, slender, and generally steely blue or silver in colour, giving rise to their name. They have reduced or absent pelvic and caudal fins, giving them an eel-like appearance, and large fang-like teeth.
Tilefishes are mostly small perciform marine fish comprising the family Malacanthidae. They are usually found in sandy areas, especially near coral reefs.
Sander is a genus of predatory ray-finned fish in the family Percidae, which also includes the perches, ruffes, and darters. They are also known as "pike-perch" because of their resemblance to fish in the unrelated Esocidae (pike) family. They are the only genus in the monotypic tribe Luciopercini, which is one of two tribes in the subfamily Luciopercinae,
The Old World silversides are a family, Atherinidae, of fish in the order Atheriniformes. They occur worldwide in tropical and temperate waters. About two-thirds of the species are marine, and the remainder live in fresh water. The 74 species are in 13 genera. The genus Craterocephalus is the most diverse with 25 species. Four genera are monotypic.
The red rainbowfish or salmon-red rainbowfish is a species of rainbowfish from Lake Sentani in Irian Jaya, Indonesia. Belonging to the family Melanotaeniidae, in the subfamily Melanotaeniinae, the Australian rainbowfishes. It is threatened in its native range, but easily bred in captivity and common in the aquarium trade.
Clingfishes are fishes of the family Gobiesocidae, the only family in the order Gobiesociformes. These fairly small to very small fishes are widespread in tropical and temperate regions, mostly near the coast, but a few species in deeper seas or fresh water. Most species shelter in shallow reefs or seagrass beds, clinging to rocks, algae and seagrass leaves with their sucking disc, a structure on their chest.
Dellichthys is a small genus of clingfishes from the family Gobiesocidae which are endemic to New Zealand. It had been regarded as a monotypic genus but a second species was described in 2018.
Hector's clingfish, Gastroscyphus hectoris, is a clingfish of the family Gobiesocidae, the only species in the genus Gastrocyathus. It is found all down the east coast of New Zealand around the low water mark amongst seaweed, on rocky coastlines. Its length is up to 6.4 centimetres (2.5 in) SL. This species was described in 1876 by Albert Günther as Crepidogaster hectoris from a holotype collected on the south shore of the Cook Strait. Günther honoured the Scottish-born scientist James Hector (1834-1907) who was the Director of the Geological Survey of New Zealand and who presented type to the British Museum.
The giant clingfish, Haplocylix littoreus, is a clingfish of the family Gobiesocidae, the only species in the genus Haplocylix. It is found all down the east coast of New Zealand around the low water mark amongst seaweed, on rocky coastlines. Its length is up to 15 centimetres (5.9 in). This species was originally described as Cyclopterus littoreus in 1801 by Johann Reinhold Forster, John C. Briggs subsequently placed it in the monotypic genus Haplocylix. Its closest relative appears to be the Caribbean deepwater clingfish Gymnoscyphus ascitus.
The blacktip grouper, also known as the redbanded grouper, blacktipped cod, black-tipped rockcod, footballer cod, red-barred cod, red-barred rockcod, scarlet rock-cod or weathered rock-cod, is a species of marine ray-finned fish, a grouper from the subfamily Epinephelinae which is part of the family Serranidae, which also includes the anthias and sea basses. It is found in the tropical Indo-Pacific region. It is the type species of the genus Epinephelus.
Gymnocephalus is a genus of ray-finned fishes from the family Percidae, which includes the perches, pike-perches and darters. They are from the Western Palearctic area, although one species, Gymnocephalus cernua has been accidentally introduced to the Great Lakes region where it is regarded as an invasive species. They have the common name "ruffe" and resemble the true perches in the genus Perca, but are usually smaller and have a different pattern.
The Indian threadfin is a species of marine ray-finned fish from the family Polynemidae, the threadfins. It is a coastal species from south-east Asia which has been recorded in Papua New Guinea.
Ostichthys is a genus of fish in the family Holocentridae found in Atlantic, Indian and Pacific Ocean.
Diplecogaster is a genus of fish in the family Gobiesocidae found in Black Sea, Mediterranean Sea and Atlantic Ocean.
Kopua is a genus of clingfishes found in the Pacific Ocean.
Lepadicyathus mendeleevi, is a species of fish in the family Gobiesocidae endemic to Madang Province in Papua New Guinea. This species is the only known member of its genus. This species was described in 2005 by Artem Mikhailovich Prokofiev, the type being collected near the village of Bongu in Madang Province from the research vessel Dmitrii Mendeleev, referred to in its specific name. The vessel was in turn named in hours of the Russian chemist Dmitrii Mendeleev (1834-1907), the creator of the most widely recognised periodic table.
Paranthias 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 Atlantic Ocean and the eastern Pacific Ocean.
Unguitrema nigrum, also known as the Black crinoid clingfish is a species of clingfish endemic to Papua New Guinea. This species occurs Madang Lagoon in Madang District, Madang Province, Papua New Guinea. This species is the only known member of its genus. It was collected from a crinoid, Oxycomanthus bennetti, of the black phase.
The dwarf paradise fish, also known as the streamer threadfin or streamered tasselfish, is a species of ray-finned fish from a family Polynemidae, the threadfins. It is the only species in the genus Parapolynemus and it is found in Australia and New Guinea.
