Impacts of Non-native Fish (Tilapia Species) on Native Fish Production in Freshwater
Author : Bhise NB and HS Jagtap
Abstract :
This study aimed to review the results of introducing exotic tilapia and its impacts on native fish production and the freshwater biodiversity. This review focuses on the Tilapia fish. It is an exotic species that has gained attention in various regions for its adaptability and impact on local fish fauna. Tilapia (Oreochromis mossambicus, O. niloticus, O. aureus) is an exotic fish and well-established in India. The introduction of Tilapia fish has been associated with several ecological impacts. Tilapia fish compete with native fish species for food, habitat, and breeding sites, leading to population declines in native fish and their production. In some cases, Tilapia fish may prey on the eggs and larvae of native fish, further exacerbating their decline. The presence of Tilapia fish can disrupt existing food webs, leading to changes in native biodiversity, degrading habitats, species composition and native fish production. We explore the biological characteristics of Tilapia fish, their ecological roles, and the implications of their presence on native fish production. Through a comprehensive examination of existing literature, this review aims to provide insights into the management of Tilapia fish to mitigate negative impacts on native ecosystems.
Keywords :
Native fish, composition, fish diversity, exotic, fish production.
