Most archerfish live in freshwater streams, ponds and wetlands, but two or three species are euryhaline, inhabiting both fresh and brackish water habitats such as estuaries and mangroves.
[1][2] They can be found from India, Bangladesh and Sri Lanka, through Southeast Asia, to Melanesia and Northern Australia.
Archerfish are remarkably accurate in their shooting; an adult fish almost always hits the target on the first shot.
[8] This is partially due to their good eyesight, but also to their ability to compensate for the refraction of light as it passes through the air-water interface when aiming at their prey.
It then fires by contracting its gill covers and forcing water through the channel, shooting a stream that, shaped by its mouth parts, travels faster at the rear than at the front.
[citation needed] A 2006 experimental study found that archerfish appear to benefit from observational learning by watching a performing group member shoot, without having to practice: This instance of social learning in a fish is most remarkable as it could imply that observers can ‘‘change their viewpoint,’’ mapping the perceived shooting characteristics of a distant team member into angles and target distances that they later must use to hit.