When in the mud these curious minnows can only feel their way, and if they procure any food at all at such a time it can only be such objects as come directly in contact with their mouths. But how different is it when these same fishes are in open water! They are expert fly-catchers then, and capture many an insect that would be lost to a trout or chub. They have not to wait for flies to fall upon the surface, but seize those that happen to alight upon overhanging blades of grass or any projecting twig. The distance that they will leap above the water is remarkable, the spring being preceded by a withdrawal from the object and a slight sigmoid curvature of the body, involving, I suppose, the same principle as that of a short run before jumping. Mud minnows two inches in length, which I kept in an aquarium, were proved capable of leaping above the water a distance equal to twice their length; but others, much larger, could not or would not leap so far. So far as my own observations extend, exhibitions of this leaping from the water to seize insects are not often witnessed, and it was my aquarium studies that led me to watch these fishes closely when in the muddy ponds and ditches. Once, when so engaged, I saw the following: One of these minnows, little more than an inch in length, sighted an insect at the same moment that it was seen by a huge female minnow more than thrice the other’s length. The little fellow had all the advantage, however, as it was much nearer the fly, and at the proper instant away it leaped, caught the insect, and sank back—but not to the water. That hungry ogress was willing to be fed by proxy, as it were, and, permitting the little minnow to swallow the fly, she promptly swallowed both.