betta

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bet·ta

 (bĕt′ə)
n.
Any of various species of small, brightly colored, long-finned freshwater fishes of the genus Betta of Southeast Asia, many of which, such as the Siamese fighting fish, are popular in home aquariums.

[New Latin Betta, genus name, from Javanese wader bettah, a species of betta (Betta picta) of Java and Sumatra (wader, freshwater fish).]

betta

(ˈbɛtə)
n
(Animals) another name for fighting fish
[C19: from New Latin, of unknown origin]