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Betta imbellis has a pair of suprabranchial chambers that each house a labyrinth organ, a complex bony structure lined with thin, highly vascularised respiratory epithelium. The labyrinth organ is a morpho‐physiological adaptation that allows the B. imbellis to extract oxygen from air. This adaptation allows the species to persist in extreme ...
Betta splendens can be hybridised with B. imbellis, B. mahachaiensis, and B. smaragdina, though with the latter, the fry tend to have low survival rates. In addition to these hybrids within the genus Betta , intergeneric hybridisation of Betta splendens and Macropodus opercularis , the paradise fish, has been reported.
A useful distinction is that, while the generic name Betta is italicized and capitalized, when used as a common name it is usually neither italicized nor capitalized. [5] The common name of B. pugnax, for example, is thus Penang betta. Betta splendens, the Siamese fighting fish, is often referred to simply as a "betta" in the U.S.
Many members are common aquarium fish; by far the most famous is the Siamese fighting fish, Betta splendens (note that the domesticated form is very likely a hybrid). Most (not all) of the 70+ betta species are paternal mouthbrooders; the remaining members of the subfamily are bubblenesters like most osphronemids.
The King betta generally grows to about 5–6 cm (2–2 1/2 in). Its pigments are generally vibrant beige to a white. As with most bettas, King betta females are smaller and less colorful than the males. The life span of the King betta is short, generally 2–3 years, rarely reaching four.
Siamese fighting fish (sometimes Betta, esp. US) Betta splendens: 7.5 cm (3.0 in) Betta is the name of the genus that includes more than 60 species other than the Siamese fighting fish. 5 gal [62] 72–82 °F (22–28 °C) [62] 6.5-7.5 [62] Emerald betta: Betta smaragdina: 7 cm (2.8 in) Spotfin betta: Betta macrostoma: 10 cm (3.9 in) Frail ...
Betta mahachaiensis is a species of bubble-nesting betta native to Thailand, [2] where it occurs naturally near the Gulf of Thailand. It is typically seen in stagnant waters in swamps, pools, and ponds. The species can be found in brackish waters, with salinity levels between 1.1 and 10.6 parts per thousand.
Betta hendra [1] is a species of gourami. [2] It is native to Asia , where it occurs in the Sabangau River basin in Central Kalimantan on the island of Borneo in Indonesia . It is typically found among plants in peat swamp forests shaded by trees and bushes with a depth of 5 to 50 cm (2 to 19.7 inches) and no water current.