![]() Other components that can also contribute to the habitat of saltwater fish are pH level, salt level, and alkalinity level. Some of them are the temperature of the water, the quality, and quantity of water (flow and depth). There are many different components that make up a marine life habitat. Fish that are bred in captivity are already accustomed to aquarium habitats and food. Captive-bred fish are less susceptible to disease because they have not been exposed to the wild and they have not been damaged during the shipment process. Captive-bred fish are known to be healthier and likely to live longer. One way that people are trying to protect the coral reefs is by breeding marine fish in captivity. In many circumstances, fish used for marine trade are collected using harmful tactics such as cyanide. There are approximately 2,000 different species of saltwater fish that are imported and used in captivity. The United States imports more saltwater fish than any other country in the world. About 10 million marine fish are imported into the United States each year for aquarium use. Saltwater aquariums are a multi-million dollar industry in the United States. ![]() Captivity Saltwater fish tanks are popular among businesses and households. Carnivores' diets consist of shrimp, plankton, or tiny crustaceans. Most saltwater fish that are carnivores will never eat algae under any circumstances. Many fish eat red, green, brown, and blue algae, but some fish prefer certain types. Most saltwater fish will eat both macroalgae and microalgae. Many herbivores' diets consist of primarily algae. Herbivores in the ocean eat things such as algae and flowering seagrasses. However, many fish species have been overfished and are otherwise threatened by marine pollution or ecological changes caused by climate change.įishes that live in the ocean can be carnivores, herbivores, or omnivores. Many saltwater fish are also caught to be eaten, or grown in aquaculture. Saltwater fish are very commonly kept in aquariums for entertainment. Saltwater fish can swim and live alone or in a large group called a school. ![]() Saltwater fish, also called marine fish or sea fish, are fish that live in seawater. Fish that live all or much of their lives in seawater ![]()
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