No one can fail to be intrigued by a fish that shoots down its prey, and in a public aquarium there is almost always a small crowd of people around the archer fish tank hoping that they will perform.
The 'archer' usually offered for sale is Toxotes jaculatrix a widespread species found from the Gulf of Aden, all around Indian coast, into southeast Asia and even nin northen Australlia. It is yet another fish that will tolerate fresh, brackish and marine conditions. The one thing they won't toelrate is cold: they like water temperature of 25-28C as Doggfather said. Many captive specimens are lost because they are kept to cool.
Archers are ideally suited to a paludarium (an aquarium with that has both underwater life abd above water plants). The tank should be large enough to hold four to six fishes (they can reach 20cm/8in or so) and can be planted with species like Java Fern and decorated with wood, which can extend above the waters surface. Out of water, above and to the back of the tank grow some marginal/terrestrail plants which overhang the water, because on this foliage the insects will land so the fish can attempt to shoot them down.
Keep fishes of approximately the same size together as it is quite common for larger specimens to intimidate smaller ones, preventing them from feeding or nipping at their fins. Some people like to keep young Scats and Monos with their archers, but the problems start when the scats and monos grow too large and become too active for the archers liking.