Collection of Fresh Water and Seawater fish.

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Fresh Water Fish:

Fresh water fish live in rivers, lakes, ponds, and other freshwater bodies. They can tolerate a lower salt concentration compared to sea water fish. This is because the concentration of salt in freshwater is lower than that in sea water. Fresh water fish are also able to regulate the salt concentration in their bodies through a process called osmoregulation. Some common examples of fresh water fish include trout, catfish, bass, and salmon.

Fresh water fish come in a variety of sizes, shapes, and colors. They are also an important source of food for humans and animals alike. Some fresh water fish are caught for sport, while others are raised in fish farms for commercial purposes.

One of the most important characteristics of fresh water fish is their ability to adapt to changes in their environment. For example, during the winter months when water temperatures drop, some fresh water fish enter a state of hibernation, while others migrate to warmer waters.

Sea Water Fish:

Sea water fish, on the other hand, live in oceans and other saltwater bodies. They are adapted to living in a high salt concentration environment and have specialized organs to help them regulate their salt balance. Some common examples of sea water fish include tuna, swordfish, cod, and halibut.

Sea water fish are generally larger than fresh water fish, and they come in a wide variety of shapes and colors. They are also an important source of food for humans, and they play a crucial role in the marine ecosystem.

One of the most interesting characteristics of sea water fish is their ability to live in different depths of the ocean. Some species of sea water fish live close to the surface, while others live in the deep sea where the pressure is much higher. Many sea water fish also migrate long distances to find food or to breed.

Another important characteristic of sea water fish is their ability to tolerate changes in temperature and salinity. This is particularly important as ocean conditions can vary greatly from one location to another.