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The peaceful betta or crescent betta (Betta imbellis) is a species of gourami native to Southeast Asia.. 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.
There is evidence that the genetic basis for aggression in betta fish is not exclusively sex-linked – a 2019 study found that female bettas of the fighting strain show significantly higher levels of aggression than their female wild-type counterparts, despite the fact that historically only male bettas have been used in fights and thus ...
When a female dies a juvenile (male) anemone fish moves in, and "the resident male then turns into a female and reproductive advantages of the large female–small male combination continue". [22] In other fishes sex changes are reversible. For example, if some gobies are grouped by sex (male or female), some will switch sex. [14]: 164 [21]
A betta fish's lifespan can be impacted by the care it receives, WebMD reports. Bettas may live longer if their tank is clean, the environment is calm and their diet is healthy.
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. The King betta is (as are all other bettas) members of the gourami family ( Osphronemidae ) and prefers a temperature of 78–82 °F.
As is typical of most bettas and gouramis, spawning involves a male building a bubble nest (a floating mat of saliva-coated air bubbles, often incorporating plant matter) and attracting a female to it. If the female accepts the male's advances, the fish will 'embrace' in open water, releasing both eggs and sperm into the water.
Female ryukin goldfish with swim bladder disease The gas bladder of a fish Swim bladder disease , also called swim bladder disorder or flipover , is a common ailment in aquarium fish . The swim bladder is an internal gas-filled organ that contributes to the ability of a fish to control its buoyancy , and thus to stay at the current water depth ...
Betta akarensis is a paternal mouthbrooder.The female plays the more active role in initiating courtship and defending the area against intruders. After courting, eggs and milt are released during an ’embrace’ typical of anabantoids in which the male wraps his body around the female.