Archerfish

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.

Illustration of an archerfish shooting water at a bug on a hanging branch
Video of an archerfish shooting at prey