![]() Predatory fish usually have a wide mouth, while omnivorous fish have smaller mouths. Fish that feed in mid water have a terminal mouth, which is usually considered the "normal" fish mouth. Surface feeding fish usually have an undershot, upturned (superior) mouth for feeding on insects. There are three general locations of the mouth in fish which often indicate the species's feeding habits. Some influence on the shape of the body has nutrition, for example, predatory fish, which catching prey, has the longer, slimer body shape than fish eating sticky foods. ![]() In cases where the fish is almost not moving, part of the body including the tail into a body attachment (seahorse). ![]() Leaf-shaped larvae of the eel makes it easier to transfer over to the spawning eels, located off the coast of Central America, to places of permanent habitation in the waters of Europe. Sometimes the fish adapt to passive movement. Some bottom-dwellers have altered swim bladders so they "hop" along the substrate instead of swimming. Bottom-dwelling fish have flattened bellies and inferior mouths. Slender, torpedo shaped fish are better adapted to moving waters. The bottom fish (flounder, catfish, burbot, bull) have the body flattened, allowing them to rely on a large ground surface, are adapted to life in slow-moving waters. For example, surface dwelling fish have an upturned mouth, a flattened back. There are different shapes of the body have species that live on the bottom and top layers of water. In the kidneys from the blood are filtered decay products. In the upper part of the body under the spine there are two red-brown buds (often incorrectly referred to as blood). The circulatory system of fish is closed, it consists of one heart and circulation. The number of scales increases with the host, so the age of fish can be determined by the annual rings as on the stump of a tree. Mucus is needed for protection from pests and to reduce friction when moving in the water. The body of the fish out of water, covered with slime. The tail is divided into the caudal peduncle and caudal fin. The Head feels part of the body from, the snout tip to the end of the gill covers. The typical body shape of a fish - spindly, where water has the least resistance. The body shape is one of the best indicators in determining the fish's environment. The body of the fish, ranging from body shape and ending with the breathing apparatus and sense organs, adapted to the conditions of life in the water, adapted to the movement in the water.
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