Fish Ecothermic Aquatic Animals Consumed By Humans Decorative Items Invertebrates

Ectothermic aquatic animals found in water are called fish. Their bodies are plastered with scales and generally they are armed with fins and gills. Fish can be found in fresh as well as saline water. Different types of fish are adapted to survive in different water bodies.

Fish are being consumed by human beings from the pre-historic age. The form of consumption has changed. With the increasing awareness of people about the rich nutritive value of fish, the rate of consumption has increased manifold. This has made fishing a bankable job. People not only catch fish from the sea and rivers but also breed them in hatcheries. Fish is now an important part of almost all the cuisines of the world.

Fish are also used by people as decorative items. Beautifully decked up and maintained aquariums with colorful and attractive fishes can change the look of the house. Many public places also boast of aquariums and flaunt their exotic collection of fish. The importance of fish depends on the different cultures. For some the fish is a symbol of a particular god and for others the fish serves as the underlying theme of a film or a painting or a book.

Wide varieties of fish are available ranging from sharks to lungfishes. They can be as huge as 51 feet or as tiny as 8 mm. A fish usually possesses an aerodynamic body that facilitates easy movement in water. The scales are oily and allow water to flow against it quickly. They inhale oxygen using gills, with the exception of the lungfish that possesses lungs. Fish are capable of fertilizing eggs both internally and externally. Fish vary in shapes and sizes. Some can camouflage themselves to protect themselves from enemies. Fish are armed with highly developed sensory organs.

Generally fish are cold blooded invertebrates. But certain sharks, swordfish and tunas are warm blooded. The temperature of their body is higher than the surrounding water. Some categories of fish like the ray fish and eels have sleek body enabling them to move faster than the rest.

The deeper scientists delve into the fish kingdom, the more fascinating it seems. It has been revealed that there are certain types of fish who live without water while some live in mud. Although some creatures are called jelly fish, starfish an shellfish, they are not fish biologically. According to aquaculture, any organism that possesses fins is termed as fish. Fish