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Economic Importance of Fishes

by Deepak Subedi | 05-01-2019 15:39 recommendations 0 recommendations


Fishes have always been an important species to man. Earliest form of fish culture appears to be of the common carp (Cyprinus carpio), the native of China. Then record shows of the cultivation of Tilapia mossamblaca from Vietnam. Fishes enjoy special consideration in Human civilization for its food, cooking, and nutritional value. Several species are sought as luxury food in expensive restaurants. Eating fish once a week is recommended by doctors. It should be heated to above 70°C.

Economic importance

  1. Protein Value: Fish Flesh contains 15-30% of protein; a higher percentage than the flesh of usual domestic animals reared for meat. Fisheries produce about 35% of the world’s animal protein. Fish protein is superior to egg, milk and beef protein.


  1. Nutritional Value: Fish meal contains all the ten essential amino acids and is also an important source of Ca, P, K, Fe, Cu and Vit. A and D. This way feeding on a fish diet can reduce malnutrition when other feeds are not found or desired.


  1. Trade and Industry: Fishing industry is a big industry that was prevalent even in the time of Jesus Christ. It is the 2nd biggest industry of Korea. Some countries like PortugalCanadaNorwayHolland export more fishes than they import while countries like USAGermany and France import more fishes than they export. Fishes are a part of the national dishes of AngolaPortugalJapanNorway and SwedenChinaMoroccoBangladeshIndiaIndonesia and Philippines account for 73% of the total fish production in the world (FAO, 1997). Total global production of Fish was 7.5 m.t. in 1986 and it increased to 8,6 m.t. in 1996. (Recent data not known)


  1. Alternative feed value: Fish can be fed as the alternative feed instead of feeding cereal grains and legumes as fish can fulfill the deficiencies that are seen with them.


  1. As feed for Livestock: Fish can be made to fish meal and fed to livestock to balance the deficiencies they face in relation to micro / macronutrients, proteins, fats and Vitamins.


  1. Industrially used Fish Products:

a)       Fish oil: This compound has six double bonds which makes it attain a degree of insaturation substantially higher than other cooking oils. Due to this, it is applied in a large scale to make different products in Industries. Shark oil is rich in unsaponificable substances.

b)       Fish flour: It is a superior quality of fish meal. It is considered as an ideal protein source to supplement to diets of both adults and infant animals.

c)        Fish silage: This is a liquid to semi-solid type of highly nutritive animal feed produced by acid process.  This is done in Europe.

d)       Fish manure and Guano: They are inferior quality of fish byproducts. Fish manure is the byproduct of fish glue industry and fish oil industry. Fish Guano is byproduct of fish body oil extraction industries. They can be used as a manure as they have N2 (5-7%), P (4-6%) and Lime (4-6%).  Guano N2 (8-10%) has been found to be several times more effective than any animal manure.

e) Fish Glue: This is obtained from trimmings, bones and skin of fish. It is considered as a superior adhesive.

f)         Isinglass: It acts as a gelatin substitute in confectionary industry. It swells in cold water, but does not dissolve in it. It is also used in an adhesive form as court plaster or other cements. But its chief use is in clarification of beer, vinegar etc.


  1. Use of Fish in Medicine: Fish are used to extract Insulin. When Insulin of lower concentration is required for treatment, Fish Insulin can be used. Besides fish are generally low in sugar content and they can be relished by Diabeteic patients. This way it can be an important component of diet with an emphasis on healthy eating.


  1. Game or recreational Value: Fishing is an important outdoor activity for a lot of people. Tor tor, Catla catla, Bagarius bagarius are some of the species used for this purpose.


  1. Ornamental Value: Fish aquariums and displays kept in the house and workplace offers an ornamental value.


  1. Biological control: Fish species such as the Gambusia are used in the control of mosquito population.


  1. Fish Leather: Skin of fishes like the Cod, Salmon, Sharks etc are used to make leather and leather products which have durable, flexible and ornamental value.


  1. Fishes in Rural Development: Small-scale fish farming can be done in the rural areas to improve life standard of rural fisherman. This can also help in income generation.


  1. Impact on Migration: Jobs generated through fishing like production, processing, transport and marketing can be expected to control, to some extent, the drift of rural people to urban areas.


  1. For social benefit: Fish farming in a community aims at the priorities of the community. It helps to attain the knowledge of human, economic and socio-infrastructural development.


  1. Employment opportunities: Crop-farming farmers nowadays produce fish side by side to their crops. This creates increased farm activity with minimal cost and more employment per unit of capital invested. More over fish farming projects have advantage of being more widely distributed geographically, and locally owned, enabling improved income distribution among the population.




  • Nepal Youth Deepak Subedi


Hema  Sapkota

  • Hema Sapkota says :
    Greetings Deepak
    I hope you are doing well!
    Thank you so much for this report!
    Keep writing
    Green cheers
    Posted 22-03-2020 11:03

Deepak  Subedi

  • Deepak Subedi says :
    Sachin Aqua species are very much important
    And can help us to provide enough nutrition :)
    Posted 05-02-2019 14:19

Sachin Regmi

  • Sachin Regmi says :
    Yes aqua species are valuable assets to all industries, be it livestock or food industry.
    Thank you for article :) :)
    Posted 05-02-2019 12:01

Deepak  Subedi

  • Deepak Subedi says :
    Hello Gyeongrin mentor, Namaste
    Yes fishes are really important for us and for maintaining ecosystem
    We should never kill any species in such way that lead extinction,
    Thank You for your comment :)
    Posted 11-01-2019 23:51

  • Gyeongrin mentor says :
    Hello Deepak
    Fish are highly valuable in the sense of economic importance as they are presented is seen in various sectors of our society. As much as it is important economically, it is also important for biodiversity.
    Every being are important as itself and also as a part of the bio chain whereas if one species goes endangered, the whole balance that supported the world will fall.
    Hope no more living beings would live under the threat of extinction.
    Thanks for the report:)
    Posted 11-01-2019 16:26

Deepak  Subedi

  • Deepak Subedi says :
    Hello Joon Ho Mentor
    Hope You are fine, and healthy
    Yes mentor we people are forgetting role of every creature and we continuously destroying them, we are only thinking of ourselves,
    but we shouldn't forgot every creature have equal right to live in this earth
    Few minute back i wrote article about Manta Ray i described how people of Indonesia change to protect it.
    Thank You for your comment.

    Posted 09-01-2019 00:10

Joon Ho Mentor

  • Joon Ho Mentor says :
    Hello Deepak, this report reminds me of dead whales and sea turtles by digesting lots of plastic garbage floating on the ocean. Some may think it's just one or two to get highlighted in news and mass media but as you said about the importance of fish in our living and ecosystem, they are not just 'one or two' to get killed or thrown away as trash or something very useless. It's just like a small town or village with a pond or swamp near the town. We live in a town or village and often go out for fishing in pond or swamp as they live there. However, once they are gone, then the water purity of pond and swamp will drastically deteriorate and soon future generations will even forget about the existence of previous fish living in those places.
    This is just a small case of metaphor, but what I can say is we may face bigger and worse problems by losing them if we forget about their importance.
    Thanks for your report!
    Posted 08-01-2019 23:58

Deepak  Subedi

  • Deepak Subedi says :
    Hello Rosa,
    I am glad to hear this sentence from you, yes Rosa many fishes are being killed randomly such as, whale shark and their population is gradually decreasing, youth like you can help in conservation of marine species.
    Thank You for your comments.
    Posted 08-01-2019 23:21

Deepak  Subedi

  • Deepak Subedi says :
    Hello Isreal
    I hope you are fit fine and healthy
    Thank you for your comments, i believe you learn about various importance of fishes.
    Posted 08-01-2019 23:19

Israel Adeoye

  • Israel Adeoye says :

    Thanks for explaining the hidden facts about fish to us. Many of these details are unknown to us, thanks for unfolding them.

    Posted 08-01-2019 18:40

Rosa Domingos

  • Rosa Domingos says :
    Hey there Deepak!

    If there is one type of meat alternative that I truly enjoy it is fish. And I truly admire your report because you are spot on with the relevance of fish in countries such as Portugal, Germany and Angola. Me being half Namibian and half Angolan I truly relate to fish being a national dish in Angola because we eat fish more than once a week in my household.

    Fish is a true commodity on its own it can sustain its own industry more over is packed with nutritional value that is needed by humans. I really respect those in the Fishery industry who make an effort to deliver fish and make sure that it is of good value and of good nutrition for all those to benefit from it. One aspect that I really dislike about the Fishery industry is how poaching has become such a rare activity within the issue Oceanic territory.

    That is one aspect I wish would change one day.

    You report was really refreshing and so very interesting thank you for writing up your report update Deepak!

    Yours sincerely
    Posted 08-01-2019 03:07

Deepak  Subedi

  • Deepak Subedi says :
    Hello Kushal
    Yes kushal you always write very good,
    Thank you for your comments :)
    Posted 07-01-2019 02:09

Kushal Naharki

  • Kushal Naharki says :
    Thank you for explaining us the economic importance of fish.

    Although we find different types of fishes, we don't have the sea fishes in Nepal since we don't have sea here.

    I do remember that I had written a report about the diversity of fishes in Nepal and its importance a year ago in this same platform.

    Keep writing great reports. Green cheer :) :) :)
    Posted 06-01-2019 00:06

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