Fish bone

“ The assumption that each element in the shoulder-girdle and the pectoral fin of the fish must correspond in detail to the arm of man has led to great confusion in naming the different [Pg 35] bones. Among the many bones of the fish's shoulder-girdle and pectoral fin, three or four different ones have successively borne the names of scapula, clavicle, coracoid, humerus, radius, and ulna. None of these terms, unless it be clavicle, ought by rights apply to the fish, for no bone of the fish is a true homologue of any of these as seen in man. ”

“ The moment, however, the fish is at the side of the skiff, he should be either gaffed or lifted over the gunwale at once, as more are lost then than at any other time. Their jaws are mere skin and bone, the skin tearing away at once, and the bone forming no substance in which the hook can imbed itself, the latter sometimes slips out or more frequently is broken off. If you value your fingers, never put them in a pickerel’s mouth or gills, which are armed with innumerable sharp and even venomous teeth. ”

“ To Bone a Fish. Clean and skin before boning. Beginning at the tail, run a sharp knife under flesh close to backbone, and with knife follow bone (making as clean a cut as possible) its entire length, thus accomplishing the removal of one-half the flesh; turn, and remove flesh from other side. Pick out with fingers any small bones that may remain. Cod, haddock, halibut, and whitefish are easily and frequently boned; flounders and smelts occasionally.
To Fillet Fish. Clean, skin, and bone. A piece of fish, large or small, freed from skin and bones, is known as a fillet. ”

“ How true it is that God has provided for the wants of all His creatures, and fitted them for the life designed for them!
But besides rising or sinking when they please, fishes can turn themselves about very quickly. To understand how they do this, you must look at the long bone which runs right through the body, from head to tail. You will see that it is made, like your backbone, of a number of small bones which move upon each other so easily that they enable the fish to turn itself rapidly, as you see it does. ”

“ A multiplicity of vertebral joints is useless to the tropical fish, but to the eel strength and suppleness are everything. No armature of fin or scale or bone is so desirable as its power of escaping through the smallest opening. With the elongation of the body and its increase in flexibility there is a tendency toward the loss of the paired fins, the ventrals going first, and afterwards the pectorals. This tendency may be seen in many groups. Among recent fishes, the blennies, the eel-pouts, and the sea-snails furnish illustrative examples. ”

“ We should probably give little attention to differences in the arrangement of skull bones, in the parts of the vertebræ, in the external clothing, in the microscopic structure of the bone, and other peculiarities for serving similar purposes by organs on a different plan, which are so conspicuous so soon as we pass from the fish to the Batrachian. It is not, in short, an improvement of the organs of the fish that we witness so much as the introduction of new organs. ”

“ Once the fish plainly appears upon the scene it is found to be undergoing a process of evolution like all other animals. The vast majority of our fishes have bony frames (or are Teleosts) ; the fishes of the Devonian age nearly all have frames of cartilage, and we know from embryonic development that cartilage is the first stage in the formation of bone. In the teeth and tails, also, we find a gradual evolution toward the higher types. ”

“ Clean fish thoroughly, remove skin without breaking and flesh by scraping from the bones, begin at the neck. With care, the back bone may be removed with all the small bones attached. Chop flesh fine with onion juice or cut fine, salt, pepper, eggs, bread crumbs, almonds. ”

“ Therefore the influences which serve as a whole to intensify fish life, to keep it up to its highest effectiveness, and which tend to rid the fish of every character or structure it cannot "use in its business," are most effective along the shores of the tropics. One phase of this is the retention of low numbers of vertebræ, or, more accurately, the increase of stress on each individual bone. ”

“ With a sharp knife cut the fish open along the back bone on the outside of the fish, but do not cut through the bone, then carefully cut the fish loose along the back bone on each side, cut the centre bone away with the smaller bones branching out on each side attached. ”

“ The bones are hard, also, in those animals311 which do not grow fat; those of the ass are used by musicians for making flutes. Dolphins have bones, and not ordinary fish-bones; for they are viviparous. Serpents, on the other hand, have bones like those of fish. Among aquatic animals, the mollusks have no bones, but the body is surrounded with circles of flesh, as in the sæpia and the cuttle-fish, for instance; insects, also, are said to be equally destitute of bones. Among aquatic animals, those which are cartilaginous have marrow in the vertebral column ”

“ If at that age the dorsal fin does not extend to the frontal region, the migrating eye simply moves over the line of the profile, temporarily assuming the position which it preserves in some of the less modified genera, such as Psettodes; in other genera, the dorsal fin has already extended to the snout before the migration takes place, and the eye, passing between the frontal bone and the tissues supporting the fin, appears to make its way from side to side through the head, as was believed by some of the earlier observers. ”

“ The upper and lateral parts of the skull are covered by well-developed membrane bones, which, from this suborder, upwards in the series, will be found to exist throughout the remaining forms of fishes. They are bones, the origin of which is not in cartilage but in membranous connective tissue. The lower surface of the skull is covered by an extremely large basal bone, which extends from the vomerine region on to the anterior part of the spinal column. The nasal excavation in the skull is rather lateral than inferior. ”

“ The medium in which fishes live and the hard and almost indestructible nature of some portions of their skeleton, as their teeth, spines, and scales, would lead us to anticipate their frequent occurrence in the sedimentary rocks; but inasmuch as the soft parts of the animal are liable to speedy decomposition, the remains of fish must often exist in a fragmentary and scattered condition. Thus the teeth in the shark, the spine defense in the stingray, and the scales in the bony pike would survive the total destruction of the cartilaginous skeleton as well as the soft portions. ”

“ In some fishes, as the catfish or the salmon, there is a small fin on the back behind the dorsal fin. This is known as the adipose fin, being formed of fatty substance covered by skin. In a few catfishes, this adipose fin develops a spine or soft rays.
Muscles.—The movements of the fins are accomplished by the muscles. These organs lie along the sides of the body, forming the flesh of the fish. They are little specialized, and not clearly differentiated as in the higher vertebrates. ”

“ The fin rays are very long stems of cartilage, set so closely together as to form a solid sheet of cartilage extending from the thoracic skeleton out to the extremities of the fins, which taper out to nothing. The thoracic skeleton gives shape to the body of the ray, particularly the back, and it must be left in place, with the skin of the back attached to it. Cut through the fin rays where they join the body, and this will enable you to skin down each side of the fish until you get so near the outer edge there is no longer any flesh. ”

“ In the angler or fishing-frog (Lophius) the anterior rays of the dorsal fin become greatly elongated to form small fishing-rods, from which depend bait-like lures for the attraction of its prey.
In the skull of the adult salmon it is seen that certain parts of the chondrocranium (fig. 24) have been replaced by bone (“cartilage bones”) while other more superficially placed bones (“membrane bones”) cover its surface (fig. 25) . Of cartilage bones four are developed round the foramen magnum—the basioccipital, supraoccipital and two exoccipitals. ”

“ The possession of a backbone or bony (sometimes cartilaginous) spinal column is the characteristic by which we distinguish them from the invertebrate or backboneless animals. Furthermore, all of the vertebrates possess an internal skeleton which is in most cases composed of bone, and is firm and strong. In some of the lower fishes, as the sharks and sturgeons, the skeleton is made up of cartilage, tough but not hard. ”

“ Both the maxillary and intermaxillary lie and move parallel to each other, being connected by a narrow membrane; in many other fishes their relative position is very different.
The mandible or lower jaw consists of a right and left ramus; their union by a ligament in front is called symphysis. Each ramus is formed of several pieces; that which, by a sigmoid concavity articulates with the quadrate, is the articulary bone (35) ; it sends upwards a coronoid process, to which a ligament from the maxillary and the masticatory muscles are attached ”

“ When we look to the great fundamental characters particularly to the framework for the attachment of the muscles, what do we find?—why, that of these Placoids,—‘the highest types of their class,’—it is barely possible to establish their being vertebrata at all, the back-bone having generally been too slight for preservation, although the vertebral columns of later fossil fishes are as entire as those of any other animals. In many of them traces can be observed of the muscles having been attached to the external plates, strikingly indicating their low grade as vertebrate animals. ”

“ In no other organisms is the evidence of design in the adaptation of means to the ends contemplated, more apparent. In the number of species and variety of forms they exceed all other vertebrate animals.
The skeleton of a fish is usually divided into four parts: the head, respiratory organs, vertebral column and limbs.
The head is very suggestive, and of itself presents a profitable study. It is not hung or poised on a neck, but attached immediately to the body. In most species it is large, making a large mouth possible, but pointed, to lessen the resistance met in passing through the water. ”

“ In the striped bass and in most fishes this bone is jointed to the temporal region of the cranium. Sometimes, as in the trigger-fishes, it is grown fast to the skull, but it usually rests lightly with the three points of its upper end. In sharks and skates the shoulder-girdle, which is formed of a continuous cartilage, does not touch the skull. In the eels and their allies, it has, by degradation, lost its connection and the post-temporal rests in the flesh behind the cranium. ”

“ There is a great amount of variation as regards the degree in which the primordial cranium persists; it is always more or less replaced by bone; frequently it disappears entirely, but in some fishes, like the Salmonidæ or Esocidæ, the cartilage persists to the same or even to a greater extent than in the Ganoidei holostei. Added to the bones preformed in cartilage are a great number of membrane-bones. ”

“ There are but few natural orders of fishes—and they divide themselves for the purposes of our enquiry chiefly into the Acanthopterygii, or those that possess bony skeletons, with prickly, spinous processes on the dorsal fins, such as the perch, the mullet, and the gurnard; the Malacopterygii, or soft-finned fishes, including the carp, the salmon, &c.; and the Chondropterygii, with cartilaginous spines and bones, embracing such fish as the sturgeon, shark, and skate. ”

“ The reduction of the skeleton is a very marked peculiarity and, like the tendency to the reduction of the skeleton of deep-sea fish, may stand in some relation to the great pressure under which the animals live. ”

“ Let the whole internal surface of the skin be well rubbed with the preservative. The body is then stuffed to its full size, and afterwards sewed up. The stuffing of the head must be completed through the orbits of the eyes, and also by the mouth. This finished, the glass eyes are inserted, as in other animals, and fixed by means of cement.
Many species of fish have semi-transparent cartilages connected with the eyes. These must be imitated with gum-arabic and powdered starch, as well as the cornea of the eyes. ”

“ You know that a fish has a backbone, and that it is beautifully formed, for you have often seen it; but perhaps you have not noticed that a lobster, though called one of the shell-fish, is quite unlike the true Fishes: its skeleton is not inside, but outside; there are no bones within, but all the soft parts are inside, and the hard parts outside; while the body of a fish is formed on just the opposite plan. The fish is called a Vertebrate animal, because it has a backbone, made up of numbers of separate bones called vertebras. ”

“ The backbone extends through the whole length of the body, and consists of vertebrae, strong and thick towards the head, but weaker towards the tail. Each species has a determinate number of vertebrae, which are increased in size in proportion to the body. The ribs are attached to the processes of the vertebrae, and enclose the breast and abdomen. Some fish, the rays, for instance, have no ribs; whilst others, like the sturgeon and eel, have them very short. ”