Inland Fisheries

9.2.1.2 Genetic impacts

The genetic impacts of introduction of exotic fishes on native fishes can be classified into 2 categories as:

• Reduction of effective population size by genetic effects of introduction in addition to ecological and biological reasons
• Alteration / extinction of gene pools of the species / stocks by crossbreeding or hybridization and backcrossing. Crossbreeding means inter-breeding between different stocks and hybridization is the inter-breeding between different species / genera.