Exotic Fish

Adaptive Appropriate strategies for responsible introduction of exotic fish The importance of an introduced fish species is almost dependent on its impact on surrounding environment, and also on the preferences and attitudes of the local people. Some fishes like carp are appreciated food fish in Asia , but in the US they are regarded as trash fish. Therefore, mechanisms of regulation for alien fish introduction and invasive fish species are depend on the specific requirements and priorities of each country. Compulsory law, quarantine facilities, education, extension and awareness may reduce the risk of introduction of unwanted fish further

Role of Exotic fishes for the reservoir fisheries development of India India has rich

Few of the introduced species proved to be a boon for aquaculture and greatly increased the yield from ponds, the accidentally introduced exotic fishes into the open-waters has generated a controversy in recent years. The deleterious impact of the exotic fishes is the growing concern in India on the fish species diversity of the Indian rivers. Cyprinus carpio communis, Hypophthalmichthys molitrix Ctenopharyngodon idella Oreochromis mossambicus, C. carpio specularis, and C. carpio nudus, enter into the reservoir ecosystem through deliberate introduction or accidental. Among all of these species, silver carp, tilapia, and common carp could make a negative impact on the fisheries of various reservoirs in India. Instances of Gambusia affinis getting naturalized in reservoirs are rare. In Markonahalli reservoir, it is reported that fish are established there as a breeding population and negatively affected the larval stages of important commercial fishes. Three exotic carps, which entered unofficially for introduction in the reservoir of the country are the mud carp, the bighead carp, H. nobilis Cirrhinus molitorella and the snail carp, Mylopharyngodon piceus, fed on zooplankton, molluscs and detritus respectively. Bighead (Aristichthys

Other than apparently purposeful translocations, accidental and unintentional translocations are occurred and still it is continue. (Hodder and Bullock 1997) has stated that translocation is the transfer of an organism, by human agency, from one place to another. The newly introduced species/populations are then referred to as alien/exotic species/populations. The use of the term alien came into adoption by the Convention on Biological Diversity (CBD) (Convention on Biological Diversity, 1994), and is the preferred term use by some national and international