are fighter fish friendly fish
For other uses, see Siamese fighting fish (disambiguation) . The Siamese fighting fish (Betta splendens), also sometimes colloquially known as the Betta, is a species in the Gourami family which is popular as an aquarium fish.They are called pla-kad (biting fish) in Thai or trey krem in Khmer. The Siamese fighting fish has been used as the default background in the beta and release candidate versions of the 2009 Windows 7 operating system, in an apparent reference to the name Betta. 2  A similar wallpaper and boot screen also was used in the pre-releases of Windows 8.