Nandidae, the leaffish, are a family of small freshwater fishes which some authorities classify in the order Anabantiformes, but which the 5th edition of Fishes of the World classifies the family and the related Badidae and Pristolepididae outside that order as "sister-taxa". Fishes of the World classified these families and the Anabantiformes alongside Synbranchiformes, Carangiformes, Istiophoriformes and Pleuronectiformes in a monophyletic clade which is a sister taxon to the Ovalentaria but to which the authors do not assign a rank or a name. According to FishBase, the family includes three genera: Nandus of South and Southeast Asia with several species, and the monotypic Afronandus and Polycentropsis of tropical West and Middle Africa. Most recent authorities place the two African genera in the South American leaffish family, Polycentridae, which is only distantly related to Nandus. Another Asian family, Pristolepididae, share the common name leaffish and appear to be more closely related.
Trichogaster is a genus of gouramis native to South Asia from Pakistan to Myanmar. It is the only genus in the monotypic subfamily Trichogastrinae as set out in the 5th Edition of Fishes of the World, although that book states that there are two genera, the other being Colisa which is treated as a synonym of Trichogaster by Fishbase and the Catalog of Fishes. Fishbase also places the genus in the Luciocephalinae. Species of this genus are very popular in the aquarium trade.
Drepane is a genus of marine and brackish water ray-finned fishes, known commonly as the sicklefishes. It is the only genus in the monotypic percomorph family Drepaneidae. These fish occur in the Indian and western Pacific Oceans, and in the eastern Atlantic near Africa.
Gagata is a genus of sisorid catfishes native to Asia.
Nangra is a genus of sisorid catfishes native to Asia.
The ornate paradisefish or spotted gourami, is a species of gourami endemic to Sri Lanka. It is the only recognized species in its genus.
Badis badis, also known as the blue perch or blue badis, is a small species of Asian freshwater fish in the family Badidae of the order Anabantiformes. It is found in ponds, rivers, ditches and swamps in northern India, eastern Pakistan, Bangladesh, Bhutan and Nepal, including the Ganges, Brahmaputra, Mahanadi and Indus basins. It is sometimes kept as an aquarium fish. It is a small, predatory fish that feeds on tiny invertebrates. Maximum total length is around 8 cm (3 in). It is sexually dimorphic, with males growing larger and more colorful, especially when excited, compared to females. Adult males have blue fins and may display dark vertical bands on the flanks, while the smaller females display little color. Several similar relatives, now recognized as separate Badis species, have historically been confused with Badis badis. Historically the two genera that now make up the Badidae, Badis and Dario, were placed in the family Nandidae; this is no longer the case.
Betta enisae is a species of gourami endemic to the Kapuas River basin of Indonesia. It is an inhabitant of forest streams with slightly acidic waters, and can mostly be found in the shallows amongst the leaf litter. This species grows to a length of 5.9 cm (2.3 in). It is commonly used as bait by local fishermen and has been found in the aquarium trade. The specific name of this fish honours Enis Widjanarti who assisted Kottelat in his expedition to the Kapuas Lakes.
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.
The scarlet badis is a tropical freshwater fish and one of the smallest known percoid fish species. It is a micropredator, feeding on small aquatic crustaceans, worms, insect larvae and other zooplankton. It is sold under a variety of names in the aquarium trade.
Betta edithae is a species of gourami endemic to Indonesia where it occurs in Kalimantan, Sumatra and the Riau Archipelago. This species grows to a length of 8.2 cm (3.2 in), and can be found in the aquarium trade. The specific name honours the German aquarist Edith Korthaus (1923-1987), who co-discovered this species with her husband Walter Foersch. Walter is honoured in the specific name of another species they discovered, Betta foerschi.
Betta strohi is a species of gourami endemic to Indonesia. This species grows to a length of 7 centimetres (2.8 in) TL.
Badis is a genus of freshwater fish in the family Badidae found in South Asia, Southeast Asia and China. These species have a sharp spine on the opercle, soft and spinous parts of the dorsal fin contiguous, three spines in the anal fin, tubed pores in the lateral line, villiform teeth and a rounded caudal fin. In addition, they differ from the related genus Dario by being larger and displaying more involved parental care.
Dario is a genus of very small chameleonfishes native to streams and freshwater pools in China (Yunnan), India and Myanmar. Depending on exact species, they are up to 1.5–3 cm (0.6–1.2 in) in standard length, and reddish or brownish in colour.
Badis ruber is a species of freshwater ray-finned fish from the family Badidae. It is found in Mekong, Salween and Irrawaddy river basins of southeastern China, Laos and Thailand. This species grows to a length of 5.0 cm (2.0 in).
Badis khwae is a species of freshwater ray-finned fish from the family Badidae that is native to Thailand. First described in 2002, this species grows to a length of 2.9 cm.
Pristolepis is a genus of fish in the family Pristolepididae sometimes classified in the order Anabantiformes native to freshwater habitats in Southeast Asia and India's Western Ghats. This genus is the only member of its family, a family which, with the families Nandidae and Polycentridae is a group of taxa which are sisters to the Anabantiformes and form part of an unnamed and unranked clade within the series Ovalentaria, closest to the Carangiformes. These three families share the common name "leaffish".
The Anabantiformes, is an order of bony fish (Teleostei) proposed in 2009. They are collectively known as labyrinth fish, are an order of air-breathing freshwater ray-finned fish with two suborders, five families and at least 207 species. In addition, some authorities expand the order to include the suborder Nandoidei, which includes three families - the Nandidae, Badidae and Pristolepididae - that appear to be closely related to the Anabantiformes. The order, and these three related families, are part of a monophyletic clade which is a sister clade to the Ovalentaria, the other orders in the clade being Synbranchiformes, Carangiformes, Istiophoriformes and Pleuronectiformes. This clade is sometimes referred to as the Carangaria but is left unnamed and unranked in Fishes of the World. This group of fish are found in Asia and Africa, with some species introduced in United States of America.
Channa stewartii is a species of dwarf snakehead in the family Channidae, which is native to Nepal and the Indian states of Arunachal Pradesh, Assam, Manipur, Meghalaya, Nagaland and Tripura. It may also be found in Bangladesh. This freshwater fish mostly inhabits hill streams, but can also be found in ponds. It is of little value as a food fish but common in the aquarium trade.
Badis limaakumi is a species of freshwater ray-finned fish from the family Badidae. It is endemic to Milak river of Nagaland, India. B. limaakumi is locally known as Tepdang, Akngashi, Aokngatsu, or Sempi. This species has the ability to change its color when it is transferred to an aquarium from its natural habitat, where it is normally black in color. The common name of this fish's family: "chameleon fishes" is due to this color changing ability of these fishes.
