marine fish menu (pisces)
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Bony fish Eels Sharks Rays & Skates Guitarfish Hagfish
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Any member of the vertebrate class Osteichthyes, including the great majority of living fishes and all the world's sport and commercial fishes.  There are more than 20,000 species worldwide, all with a skeleton at least partly composed of true bone. Other features include, in most species, a swim bladder (an air-filled sac to give buoyancy), gill covers over the gill chamber, bony platelike scales, a skull with sutures, and external fertilization of eggs. Bony fishes occur in all ocean environments. Any of more than 790 fish species (order Anguilliformes) that are slender, elongated, and usually scaleless, with long dorsal and anal fins that are continuous around the tail tip. Eels are found in all seas, from coastal regions to the mid-depths.
Any of more than 300 species of predatory cartilaginous fish (order Selachii). The skin typically is dull gray and tough and has toothlike scales. Most sharks have a muscular, asymmetrical, upturned tail; pointed fins; a pointed snout; and sharp triangular teeth. Sharks have no swim bladder and must swim perpetually to keep from sinking. Any of 300 – 350 mostly marine species of cartilaginous fish (order Batoidei) found worldwide and classified as electric rays, sawfishes, skates, and stingrays. Many species are slow-moving bottom-dwellers. The gill openings and mouth are on the underside of the flattened body. Winglike pectoral fins extend along the sides of the head. All but electric rays have a long, slender tail, often with saw-edged, venomous spines, and rough, often spiny, skin. The guitarfish are a family, Rhinobatidae, of rays. The guitarfish are known for an elongated body with a flattened head and trunk and small ray like wings. The combined range of the various species is tropical, subtropical and temperate waters worldwide. They often travel in large schools. Any of about 30 species of primitive jawless fishes and found in every ocean; the  Hagfishes are eel-like, scaleless, and soft-skinned and have paired thick barbels on the end of the snout.  They have a cartilaginous skeleton. The mouth is a slitlike, sucking opening with horny teeth. Found in cold seawater, to depths of over 1,200 m, they habitually lie buried in burrows on soft bottoms. They secrete extraordinary amounts of slime when handled



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marine fish menu (pisces)