Freshwater fish

“ This list could be much increased from the families of Siluridæ and Cyprinidæ, but as these have a greater range than the other Freshwater fishes, they do not illustrate with equal force the object for which the list has been composed.
The ways in which the dispersal of Freshwater fishes has been effected were various; they are probably all still in operation, but most work so slowly and imperceptibly as to escape direct observation; perhaps, they will be more conspicuous, after science and scientific inquiry shall have reached to a somewhat greater age. ”

“ Those fresh-water fishes that do not wander away, go to the well-aired spots in their neighborhood to spawn—to the shore-waters, the wet meadows, or the junctions of rivers, or to the tributary streams of the lakes in which they live. Those salt-water fish which live at the bottom likewise go to the waters near the shores, where the flats and the meadows swarm during the spring with their young. The eggs of the cod and mackerel are buoyed upon the surface of the water, where the winds blow constantly over them. ”

“ Better fish are sometimes met with in free waters than in preserves, solely because they have had abundance, and variety of food. In all moor becks, plenty of small Trout are found; such waters are excellent for breeding, but as very little nutriment comes from peat or waste lands, they are generally dwarfish in size, and moderate in flavour. ”

“ It hides amongst the sea-weed at the bottom of the sea, and the fleshy shreds attached to its nose, floating about in the water, act as natural bait, and attract the unwary little fishes in its neighborhood, but the instant one of them makes a bite at the tempting morsel it is whisked away, and the poor fish is caught in the huge mouth of the fisherman fish, and crushed up by its sharp teeth. ”

“ Watch the snails' eggs develop in clusters. Buy if you cannot find banded swamp snails that give birth to their young instead of laying eggs.
Any pond or stream will furnish fish that are beautiful or interesting to watch, e.g., killies, sunfish, cat-fish, carp, shiners, blacknosed dace, minnows--the mud minnow that seems to stand on his tail--darters, etc. If you get your supply from dealers, buy gold fish, of which there are several varieties, fan-tailed, comets, fringe tails and telescope eyed. Mirror carp are lively. ”

“ In the case of trout, the quantity, quality, and size will very much depend on the quantity and kind of food to be obtained. There should be plenty of weeds, sedge, flags, &c., not only for shelter, but they are the natural breeding places of insects and crustacea, in which trout delight, and if the river is overhung with trees and bushes it not only adds to the security of the fish, but harbours flies and other insects which drop off into the water. ”

“ Many species inhabit fresh water, and the study of the group is more commonly pursued by the investigator of fresh-water pond life than by the sea-side naturalist. However, marine species are abundant, and may be captured in the open water or in rock pools by means of a muslin net. As with the last order, some degenerate from the comparatively complicated free-swimming and eyed larval state to blind and limbless parasites that feed on the bodies of fishes and are known as fish lice. ”

“ Certain kinds of shellfish, for example oysters, mussels, cockles, live in the sand or attached to the stones or seaweed on the seashore, generally between high and low watermarks. They obtain their food from the water as it streams over their gills. They require adequate room for growth and development, and constant irrigation by water containing sufficient floating food. When mussel beds or oyster beds become overcrowded, the fish are ill-nourished, their health is impaired and their growth is arrested. ”

“ With quick movements like Shrimps they dart away as you approach. They have a way of hiding under weeds and rocks, being very clever at "hide-and-seek," and knowing all the dodges. But, by using a net, you will soon capture a few of them. Then you can put them in a small pool and examine them; or even keep them in an aquarium, giving them clean sea-water, seaweed, and the small shrimps on which they feed.
In our lesson on fish-nurseries we saw how the Sea-stickleback, Sand Goby and Pipe-fish cared for their eggs or young ones. These three fish are often to be found by the shore. ”

“ Here will be found hydroids, sea-anemones, starfishes, sea-urchins, barnacles, mussels. In the shallow water, crabs and shrimps are crawling along the sandy bottom or are lying concealed in the mud, while schools of little fishes scoot across the pool. If a fine silk net is drawn through the water and then emptied into a glass dish a whole new world of creatures will be revealed—jellyfishes, ctenophores, hydroids, eggs of fish, tiny copepods, the larvae or young of sea-urchins, starfishes, or oysters. ”

“ We have considered hitherto only their influence upon the sea fish which ascend the rivers to spawn. Their effect upon the resident fish is quite as baneful. As the suckers, and the bass, and the cat fish, and dace, and trout, grow large, they naturally go down stream in search of deeper water and wider pools, where they get more room and better food. If they luckily escape the baskets and traps set for them in every dam, they never can get back. ”

“ Realms of Distribution of Fresh-water Fishes.—If we consider the fresh-water fishes alone we may divide the land areas of the earth into districts and zones not differing fundamentally with those marked out for mammals and birds. The river basin, bounded by its shores and the sea at its mouth, shows many resemblances, from the point of view of a fish, to an island considered as the home of an animal. It is evident that with fishes the differences in latitude outweigh those of continental areas, and a primary division into Old World and New World would not be tenable. ”

“ But now dog-fish are often marketed as “flake.” The catch is generally a miscellaneous one of turbot, bream, plaice, whiting, hake, haddock, gurnet, sole, and brill, with a few lobsters, crabs, and eels, and when the undesirables among the fish, and the stones and the seaweed, are sorted out, frequently resolves itself into a dozen or so pair of soles, and a few baskets and “trunks” of other fish. ”

“ Therefore to supply millions of animals with food, and yet not depopulate the watery realms, the issue produced by some of their species is almost incredible. The spawn is not by scores, but by millions: and by this amazing expedient, constant reparation is made proportionable to the immense havoc.
As the different species of fishes are designed to occupy the waters, and range to and fro in that element, so they are wonderfully formed for that purpose. The chief instruments of the motion of a fish are the fins, which in some fishes are more numerous than in others. ”

“ The Soft-finned Fishes are, in general, inferior to the Spinous-finned in the degree of development of those essential characteristics which distinguish a fish from other vertebrate animals they are a step lower in the scale of organic perfection. The great majority of fresh-water fishes are found here, though associated with many that are exclusively marine. A considerable proportion of the species are ground-feeders; fishes which have the powers of swimming feebly developed, and are compelled to grovel on the mud at the bottom, and lie in wait for passing prey. ”

“ A hundred streams pour their contents into the great lake which, from its enormous size and depth, retaining the temperature of winter through the summer months, empties its clear, cold, transparent{40} waters into the river Ste. Marie. Not producing a large variety of fish, those that dwell in its bosom are the finest of their species. The speckled trout, the Mackinaw salmon, and the black bass are large and vigorous; sturgeons are plentiful, although valueless except as an article of food; and the white fish are the daintiest fresh-water fish in the world. ”

“ Apart, therefore, from differences in local conditions, for example of temperature and food supply, there is practically no obstacle to the world-wide distribution of any particular species of fish. At the bottom of the sea, the temperature, the food supply, and the general conditions of life are singularly uniform all over the world, consequently there are no barriers at all to the dispersion of demersal fish, and we find various species widely distributed in all seas. Demersal fish, on the whole, are more primitive in type than those that live nearer the surface. ”

“ And in four or five hours with one net were ordinarily taken seven or eight; often more, seldom less. In the small rivers all the year there is a good plenty of small fish, so that with hooks those that would take pains had sufficient....
Of fish we were best acquainted with sturgeon, grampus, porpoise, seals, stingrays whose tails are very dangerous, brits, mullets, white salmon, trouts, soles, plaice, herring, conyfish, rockfish, eels, lampreys, catfish, shad, perch of three sorts, crabs, shrimps, crevises, oysters, cockles, and mussels. ”

“ In dull weedy bays he becomes lazy, ugly, and ill-flavored; but in cold or rapid water, or upon stony bottom, he acquires a vigor of body and excellence of flavor that place him in the first rank of piscatorial prizes.
Although not abundant, if even indigenous in the Middle States, he has been extensively introduced; and finding many of the clear, transparent, rocky, eastern ponds admirably adapted to his health and propagation, he is populating waters that have heretofore produced little besides perch and sun-fish. ”

“ Demersal fish, as they complete the larval stage of their development and descend into deeper water, have to rely for their food either upon the various species of young shellfish and crustacea that drop from the surface water as they develop, or hunt for their food amongst the small fish, mollusca, crustacea, worms and seaweeds of the sea-bottom. Plaice feed chiefly upon cockles and other mollusca, which in their turn feed upon diatoms. The cod is almost omnivorous, greedily devouring small fish, crustacea, worms or mollusca; its favourite food, however, is shrimps and prawns. ”

“ As far as our observations go this primitive mode of fishing is usually anything but successful, the receding of the tide generally revealing a long row of clean hooks, with, perhaps, one or two dead or half-dead fish; and it is probable that most of the bait is devoured by crabs and other crustaceans before the water becomes sufficiently deep to allow the desired fishes to reach it. ”

“ When at a proper distance, it darts forth its bill with astonishing celerity, to pierce and secure its prey; and this it does with so much precision, that, while watching some at a distance with a glass, I rarely observed an instance of failure. If fish is plentiful, on the shallows near the shore, when it has caught one, it immediately swallows it, and runs briskly through the water, striking here and there, and thus capturing several in succession. ”

“ In the mouths of streams or rivers, they take large quantities, by weirs made of bushes, but the most common method is pursuing the fish into shoal water, and spearing them, or as they lie basking on the surface. During calms, they walk over the mud and sand-banks, in search of flat fish, which are easily detected while lying at the bottom. At night, too, they light torches of grass-tree, and thus see the fish at the bottom, apparently asleep, when they very readily spear them. ”

“ When near the coast they conceal themselves between corals, stones, or fucus, holding on to the ground by means of their arm-like pectoral fins. Their coloration is so similar to their surroundings that it is hardly possible to distinguish the fish from a stone or coral overgrown with vegetation. Their way of attracting and seizing their prey is evidently the same as in the other fishes of this family. The extraordinary range of some of the species which inhabit the Atlantic as well as the Indo-Pacific Oceans, is the consequence of their habit of attaching themselves to floating objects. ”

“ At 614 sea it flies at a small height, but when flying over the land, or even when approaching it, should there be any suspicion of danger, it rises to a considerable height. Its food consists of shrimps, small fishes, roe, aquatic insects, and mollusca, which it procures by diving. The flesh is dark, and generally tastes of fish, but that of the female is good during the period of her sojourn on the fresh-water ponds.
The male takes three years to acquire his full plumage, although many individuals breed in the second year. The female is perfect in the second spring. ”

“ 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? ”

“ Commercial considerations.—In those regions there are doubtless elements of commercial wealth in the number of seals and abundance of whales, if in nothing else. It seems to be a physical law that cold-water fish are more edible than those of warm water. Bearing this fact in mind as we study Plate IX., we see at a glance the places which are most favoured with good fish-markets. Both shores of North America, the east coast of China, with the west coasts of Europe and South America, are all washed by cold waters, and therefore we may infer that their markets abound with the most excellent fish. ”