Rainbowfishes (Melanotaeniidae) is a rather popular aquarium fish kind. It got the name due to the coloring which contains all colors of rainbow in the most unusual and unexpected combinations. Nowadays there are 72 rainbowfish kinds known. All of them inhabit in Australia and neighboring islands.
The leopard bush fish or spotted ctenopoma (Ctenopoma acutirostre) is a fish kind from Anabantidae family. Is a predator by nature and any small tank dwellers which it can swallow can become its prey. For example, juveniles and small sized fishes, various amphibians, fish eggs, insects, shellfish, small sized crustaceans and other spineless species.
Boesemani rainbow (lat. Melanotaenia boesemani) comes from Melanotaeniidae family. This is a bright, active and schooling fish. It is quite challenging in terms of keeping, therefore it’s not recommended for beginner aquarists.
Archer fish (lat. Toxotidae) belongs to ray-finned fishes of monotypic family Toxotidae, that in order to feed spray water in the air or on the ground to shoot down insects and then eat them. The droplets hit so hard that insects fall into water, where they are quickly eaten by the fish. It seems that the fish faultlessly knows where its prey falls and goes there fast before other fish gets it or it will be carried away by the water flow.
Besides, archer fish similar to silver arowana can jump out of water to catch its prey, though not very high, just at its body length.