Hint: Fishing is an undertaking for the production or harvesting of fish and other aquatic life. Commercial fisheries, both in freshwater (about 10% of all catches) and in the oceans (about 90%), include wild fisheries and fish farms. Worldwide, about 500 million people are economically dependent on fishing.
Complete answer:
Fish are marine, cold-blooded and cranial vertebrates belonging to the super class of Pisces within Phylum Chordata.
Fisheries is a type of industry concerned with fish, shellfish (molluscs, each with a shell in two halves, used for food, e.g., meat, oysters, etc and crustaceans being caught, processed or sold.
Fish Economic Importance:
Fish as food:
Fish flesh is an excellent source of protein, has very little fat, is rich in iodine and carries a good quantity of minerals and vitamins A and D. Above all, men can easily digest it.
(ii) Fish for disease control:
It is possible to control diseases like malaria, yellow fever and other dreadful diseases that are spread by mosquitoes. Larvivorous fish eat mosquito larvae. Gambusia, Panchax, Haplochitus, Trichogaster, etc are the major larvivorous fish.
(iii) Quality aesthetic:
In aquariums, a significant number of fish are bred for their beauty and graceful movements. Macropodus, Trichogaster, Carassinus (gold fish) and Pterophyllum (angel fish) are important aquarium fishes.
Fisheries are of economic importance, as follows:
1. It offers many individuals good opportunities for work and self-employment.
2. The food source for nutritious foods is fish.
3. Fishes generate a number of commercially valuable by-products. Fish oil, fish meat, fertiliser, fish glue and so on are these by-products.
4. In paintings, soaps, oils and medicines, these by-products are widely used.
5. Prawns and lobsters all over the world have high market value.
Note: Two main types of fisheries exist: inland and marine fisheries.
It uses fish to extract insulin. Fish Insulin can be used when lower-concentration insulin is required for therapy. In addition to seafood, the sugar content is usually low and can be enjoyed by diabetic patients. In this way, with a focus on healthy food, it can be an important part of the diet.
