Why fishing is highly developed in temperate latitudes?

This is because of a number of factors, which hinders the development of the tropical latitudes are

i. Tropical waters have a large variety of species all mixed up, which reduces the scope for large- scale commercial exploitation

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ii. Tropical waters have high temperature, which does not support plankton population.

iii. The very warm climate does not allow fish preservation and the fish must be consumed quickly.

iv. Most of the tropical countries have inefficient and inadequate transportation.and refrigeration facilities.

v. The demand for fish is also very low in these countries.