Vol. 4, Issue 3 (2017)
Non-native fishes in the inland fish production of Kerala (South India)
Author(s): Sahadevan P
Abstract: In Kerala (South India), introduction of exotic fishes was started as early as 19th century by British rulers, mainly for sport fishing. Later non- native species were introduced with a view to increase fish production from untapped water bodies to ensure nutritional security. Though introduction of non- native species may result in negative impacts, their positive impacts cannot be overlooked especially with regard to enhancement of fish production, protein supply, provision of livelihood to masses and increase in income. The present paper is an attempt to examine the extent of contribution of non- native species of fishes to the inland fish production of the state of Kerala, based on secondary data. The study revealed that non- native species of fishes contribute to the inland fish production substantially. There is a gradual increase in percentage contribution of non- native fishes to the total inland fish production of the state from 21.05% to 47.59% during the last 20 years viz., 1994- 95 to 2014- 15. An attempt was also made to trace the history of introduction of non- native species of fishes to India with special reference to Kerala.