TAILIEUCHUNG - Biology of Aquatic Organisms - Fish anatomy

Fish are aquatic vertebrates with fins for appendages. They "breathe" by means of gills. Fish make up the largest of the vertebrate groups with over 20,000 species. They can be found in a great variety of lakes, streams, oceans and estuaries. Fish are divided into two groups based on the composition of their skeletons. The sharks, skates and rays are cartilaginous fish. Their skeletons are made of cartilage, the same flexible material in your ear lobes and nose. The majority of fish have skeletons made of bone and are called bony fish | min UNIVERSITEIT GENT Biology of Aquatic Organisms Fish anatomy Prof. Dominique Adriaens Dept. of Biology . Ledeganckstraat 35 B-9000 Gent Biology of Aquatic Organisms Fish anatomy 1 CRANIATA What are fishes LU Myxini hagfish Chondrichthyes cartilaginous fishes Osteichthyes bony fishes LU Petromyzontiformes lampreys Biology of Aquatic Organisms Fish anatomy Selachii sharks Actinopterygii ray-finned fishes Sarcopterygii lobe-finned fishes Holocephali chimaeras Batoidea rays Overview External morphology Anatomy - integumentary system - skeletal system - muscular system - nervous system - vascular system - digestive system - respiratory system - excretory system - genital system - endocrine system Chondrichthyes - cartilaginous fish Squalus acanthias - spiny dogfish Osteichthyes - bony fish Perca fluviatilis - perch Fish anatomy 3 Biology of Aquatic .

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