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Betta splendens enjoy a decorated tank, as they seek to establish territory even when housed alone. They may set up a territory centered on a plant or rocky alcove, sometimes becoming highly possessive of it and aggressive toward trespassing rivals; consequently, bettas, if housed with other fish, require at least 45 litres (about 10 gallons).
The best known Betta species is B. splendens, commonly known as the Siamese fighting fish and often kept as an aquarium pet. Characteristics All Betta species are small fishes, but they vary considerably in size, ranging from under 2.5 cm (1 in) total length in B. chanoides to 14 cm (5.5 in) in the Akar betta ( B. akarensis ).
Betta patoti, sometimes known as the tiger betta or zebra betta, [1] [2] is a species of gourami. It is a freshwater fish native to Asia, where it occurs in the southern part of East Kalimantan on the island of Borneo in Indonesia. The species reaches 10.7 cm (4.2 inches) in total length and is known to be a facultative air-breather. [3]
The giant betta (Betta anabatoides) is a species of freshwater ray-finned fish in the subfamily Macropodusinae, part of the gourami family. [2] It is endemic to South Kalimanatan, Katingan, and Sampit in Indonesian Borneo. It is found in a variety of freshwater habitats and is a paternal mouthbrooder.
All living species show parental care until fry are free swimming: some are mouthbrooders, like the Krabi mouth-brooding betta (Betta simplex), and others, like the Siamese fighting fish (Betta splendens), build bubble nests. Currently, about 133 species are recognised, placed in four subfamilies and about 15 genera.
The Krabi mouth-brooding betta is an oblong fish with rounded fins, growing to a length of about 8 cm (3 in). The basic colour is yellowish-brown or greyish-brown with three faint longitudinal stripes. The gill-cover has a bluish-green patch and the fins have a blue iridescence. The pelvic fins are short and the anal fin long, with a dark margin.