CHÆTODON. See ICHTHYOLOGY Index. This fish is a native of the East Indies, where it frequents the sides of the sea and rivers in search of food; from its singular manner of obtaining which it receives its name. When it spies a fly sitting on the plants that grow in shallow water, it swims to the distance of four, five, or six feet; and then, with a surprising dexterity, it ejects out of its tubular mouth a single drop of water, which never fails striking the fly into the water, where it soon becomes its prey.