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21 maj 2024 · Fish Characteristics. Fish possess several distinct features that distinguish them from other vertebrates: Gills: For extracting oxygen from water. Fins: For propulsion, steering, and balance. Scales: Covering the body for protection and reducing water resistance. Lateral Line System: A sensory organ that detects water movements and vibrations.
Describe the general physiological and anatomical features of fish. Modern fishes include an estimated 31,000 species, by far the most of all clades within the Vertebrata. Fishes were the earliest vertebrates, with jawless species being the earliest forms and jawed species evolving later.
In the epidermis of most fishes are cells that produce mucus, a slippery material like runny gelatin, that helps the fish slide through the water. The mucus wears off daily, carrying away microscopic organisms and other irritants that might harm the fish.
26 cze 2023 · Describe how sensory capabilities relate to the fish’s ability to communicate and orient. Express how the sensory abilities lead to responses to environmental stimuli. Apply concepts of fish sensory capabilities to predict effects of humans on fish.
Nearly all bony fishes have an ossified skeleton with specialized bone cells (osteocytes) that produce and maintain a calcium phosphate matrix. This characteristic has been reversed only in a few groups of Osteichthyes, such as sturgeons and paddlefish, which have primarily cartilaginous skeletons.
Nearly all bony fishes have an ossified skeleton with specialized bone cells (osteocytes) that produce and maintain a calcium phosphate matrix. This characteristic has been reversed only in a few groups of Osteichthyes, such as sturgeons and paddlefish, which have primarily cartilaginous skeletons.
The skin of most fish is made out of a special slippery substance. It is covered by small plates called scales. Some scales have special cells that give fish a certain color. Fish breathe oxygen from the water they live in. Gills on the side of a fish’s head absorb oxygen from the water and release carbon dioxide into it.
