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Fish

Many species of fish are caught by humans and consumed as food in virtually all regions around the world. fish has been an important dietary source of protein and other nutrients throughout human history. the english language does not have a special culinary name for food prepared from fish like with other animals (as with pig vs. pork), or as in other languages (such as spanish pescado vs. pez). in culinary and fishery contexts, fish may include so-called shellfish such as molluscs, crustaceans and echinoderms; more expansively, seafood covers both fish and other marine life used as food.since 1961, the average annual increase in global apparent food fish consumption (3.2 percent) has outpaced population growth (1.6 percent) and exceeded consumption of meat from all terrestrial animals, combined (2.8 percent) and individually (bovine, ovine, porcine, etc.), except poultry (4.9 percent). in per capita terms, food fish consumption has grown from 9.0 kg (19.8 lb) in 1961 to 20.2 kg (45 lb) in 2015, at an average rate of about 1.5 percent per year. the expansion in consumption has been driven not only by increased production, but also by a combination of many other factors, including reduced wastage, better utilization, improved distribution channels and growing consumer demand, linked with population growth, rising disposable incomes and urbanization.europe, japan and the united states of america together accounted for 47 percent of the world's total food fish consumption in 1961, but only about 20 percent in 2015. of the global total of 149 million tonnes in 2015, asia consumed more than two-thirds (106 million tonnes at 24.0 kg per capita). oceania and africa consumed the lowest share. the shift is the result of structural changes in the sector and in particular the growing role of asian countries in fish production, as well as a significant gap between the economic growth rates of the world's more mature fish markets and those of many increasingly important emerging markets around the world, particularly in asia.

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Seafood

Seafood is any form of sea life regarded as food by humans, prominently including fish and shellfish. shellfish include various species of molluscs (e.g. bivalve molluscs such as clams, oysters and mussels, and cephalopods such as octopus and squid), crustaceans (e.g. shrimp, crabs, and lobster), and echinoderms (e.g. sea cucumbers and sea urchins). historically, marine mammals such as cetaceans (whales and dolphins) as well as seals have been eaten as food, though that happens to a lesser extent in modern times. edible sea plants such as some seaweeds and microalgae are widely eaten as sea vegetables around the world, especially in asia. seafood is an important source of (animal) protein in many diets around the world, especially in coastal areas. semi-vegetarians who consume seafood as the only source of meat are said to adhere to pescetarianism. the harvesting of wild seafood is usually known as fishing or hunting, while the cultivation and farming of seafood is known as aquaculture and fish farming (in the case of fish). most of the seafood harvest is consumed by humans, but a significant proportion is used as fish food to farm other fish or rear farm animals. some seafoods (i.e. kelp) are used as food for other plants (a fertilizer). in these ways, seafoods are used to produce further food for human consumption. also, products such as fish oil and spirulina tablets are extracted from seafoods. some seafood is fed to aquarium fish, or used to feed domestic pets such as cats. a small proportion is used in medicine, or is used industrially for nonfood purposes (e.g. leather).