Archerfish Care Guide - Aquarium Setup, Diet & Breeding

Archerfish are instantly recognisable for their elongated, laterally compressed bodies, upturned mouths and distinctive dark vertical bands. Their silvery colouring helps them blend into the bright, reflective surface waters of estuaries and mangrove channels, while the high-set eyes give them an excellent view of prey above the waterline.

Their most famous ability is hunting by shooting a precise jet of water at insects resting on overhanging leaves, branches and roots. By striking prey from below, they knock it into the water and quickly seize it. Young fish begin with shorter shots, but adults can accurately hit targets several body lengths away.

These are intelligent, alert fish with strong social behaviour. Archerfish often travel in loose groups, watching one another and competing for falling prey. They can also learn to recognise feeding routines and individual keepers, although larger specimens may become assertive around food.

In the wild, they move between mangrove forests, tidal creeks and sheltered estuarine margins. Their natural habitat is structurally complex, with submerged roots, branches and vegetation above the surface. This combination of shallow water and aerial cover is central to their unusual hunting style.

Toxotes jaculatrix is native to coastal South and Southeast Asia, ranging from India and Sri Lanka through Bangladesh, Myanmar, Thailand, Malaysia and Indonesia. It inhabits brackish estuaries, mangrove creeks and tidal rivers, and may also enter nearby freshwater areas.

A group of Archerfish needs a large aquarium of at least 500 litres, with a footprint around 180 x 60 cm for adult fish; larger dimensions are strongly preferable as they mature. Use a secure, tightly fitting lid because these fish are powerful jumpers and may shoot water from the tank. Provide open swimming space alongside mangrove-style roots, sturdy branches, rocks and hardy plants, with some vegetation or décor extending above the water surface. Fine sand or smooth gravel is suitable, and efficient filtration with gentle-to-moderate circulation should maintain clean, well-oxygenated water. Brackish conditions are generally appropriate, with salinity matched gradually and consistently rather than changed abruptly.

Archerfish can reach about 30 cm (12 in) in length, with females typically growing larger and heavier than males.

Archerfish are carnivorous predators that naturally feed on insects, spiders, small crustaceans and other small animals at or near the water’s surface. Offer a varied diet of quality floating carnivore pellets, insects such as crickets or mealworms, earthworms, mysis shrimp and appropriately sized crustaceans. Surface feeding is especially enriching, but live insects should be clean and free from pesticides.

Archerfish are best kept with other robust, similarly sized brackish-water fish, such as monos, scats, larger gobies and peaceful brackish puffers where their requirements are compatible. They should not be housed with tiny fish, delicate species or slow feeders, which may be viewed as prey or outcompeted at mealtimes. Avoid fin-nippers and highly aggressive tankmates, and remember that adult Archerfish can eat surprisingly large prey.

Archerfish are rarely bred in home aquariums. In nature, they are believed to spawn in open coastal waters, with eggs and larvae developing in conditions influenced by tides and salinity. Successful captive breeding requires a very large, mature system and careful control of water chemistry, making it uncommon outside specialist public aquariums and breeding facilities.

Females are generally broader-bodied and larger than males when fully mature. Males tend to remain slimmer, but the sexes are otherwise difficult to distinguish reliably by external appearance.