“The antelope has less reason to fear the lion than has the minnow to dread the pike. We think of timid antelopes and roaring lions, but the former has good use of its limbs, and so a fighting chance for its life; but the minnows have little advantage in the struggle for existence, and none at all when the predatory fishes are in pursuit of them.”
This was written in a note-book more than thirty years ago, and I let it stand as evidence of how easy it is to be in error in matters of natural history.
When I went to school there was but one teacher of the five that knew anything about such matters, and he had the old-time views. Then a fish was a mere machine so far as intelligence was concerned. We were told of the cunning of foxes and the instinct of ants and bees, but never a word of fishes.
126The truth is, I might very properly speak of wild “wit” in the water instead of “life,” for there can be not the shadow of a doubt but that many of our fishes are really cunning. We need but watch them carefully to be readily convinced of this. How else could they escape danger?
The pretty peacock minnows throng the grassy beach at high tide, playing with their fellows in water just deep enough to cover them, and are, when here, very tame and careless. They even get stranded upon the airy side of floating leaves, and enjoy the excitement. They realize, it would seem, that where they are no pike can rush down upon them, no snake work its way unseen among them, no turtle crawl into their playground; but as the tide goes out and these minnows are forced nearer to the river’s channel, they lose their carelessness and are suspicious of all about them.
To call this instinctive fear and result of heredity sounds well; but the naturalist is brought nearer to the wild life about him when he credits them simply with common sense. The charm of watching such “small deer” vanishes if we lean too much on the 127learned and scientific solutions of the comparative psychologist, and possibly, too, we wander further from the truth. All I positively know is, that when danger really exists the minnows are aware of it; when it is absent they throw off the burden of this care, and life for a few hours is a matter of pure enjoyment.
Brief mention should be made of the protective character of the coloring of certain fishes. If such are fortunate enough to be protectively colored, there is little to be said; but are they conscious of this? Does a fish that is green or mottled green and gray keep closely to the weeds, knowing that it is safer there than when in open water or where the bottom is covered with white sand and pebbles? This may be a rather startling question, but there is warrant for the asking. Float half a day over the shallows of any broad pond or stream, study with care and without preconception the fishes where they live, and you will ask yourself not only this question, but many a stranger one. If fish are fools, how is it that the angler has so generally to tax his ingenuity to outwit them? How closely Nature must be copied to deceive a trout!
128Having said so much of small fishes, what now of the larger ones that prey upon them? A pike, for instance? Probably many more people have studied how to catch a pike than have considered it scientifically. It is tiresome, perhaps, but if a student of natural history really desires to know what a fish actually is, he must watch it for hours, being himself unseen.
At one time there were several large pike in my lotus pond. Under the huge floating leaves of this splendid plant they took refuge, and it was difficult to catch even a glimpse of them. At the same time the schools of minnows seemed to enjoy the sunlight and sported in the open water. More than once, however, I saw a pike rush out from its cover, and finally learned that it systematically lay in wait for the minnows; and I believe I am justified in adding that the minnows knew that danger lurked under the lotus leaves.
The situation was not so hap-hazard a one as might appear at first glance, and hours of patient watching convinced me that there was a decided exercising of ingenuity on the part of both the pike and the minnows; the former 129ever on the lookout for a victim, the latter watchful of an ever-present danger. Day long it was a ............