This potential negative impacts of genetics in connection with brood stock management issues, for instance inbreeding, genetic drift, introgressive hybridization, in addition to unconscious selection, have been better established that many, if not many, of aquaculture stocks have been negatively impacted by poor genetic management.
Availability of fish seed of the candidate species in adequate quantity is among the most important factors for some sort of sustainable and profitable fish producing, which involves a number of management practices inside maintenance of quality broodfish throughout adequate number. In the tropics, most aquaculture species is usually grown year round, subject to suitable availability of water and demand for cultured fish can be largely year round, with seasonal troughs and peaks from the availability of fish from seize fisheries and cultural preferences.
On the other hand, for the majority of varieties, spawning and seed supply will be seasonal, thus multiple spawning species in many cases are preferred for successful aquaculture. On the other hand, there is a need to create good quality seed, fingerlings and high quality broodstock at a good price to be able to solve the problems encountered simply by fish farmers in Nigeria.
Scarcity of quality seeds have been identified as one of the major problem encountered by fish farmers in Nigeria. Government should be willing to support hatcheries by given subsidy to equipment and materials used in the marketplace.
Nigerian aquaculture industry also would need to explore the potential of your age and modern technologies in breeding this will enable the development of premium quality fish seed.
One aspect of the Nigerian seed industry which has to be addressed is the standardization connected with fingerling size and pricing. A result of the absence of institutionalized quality command of practices, seed producers market different sizes of fry in addition to fingerlings to farmers, with neither standardization nor guarantee about the quality. While some hatcheries market 1-2 cm fry as fingerlings, another farm may sell 5-6 cm fry for that same price. The market capitalizes about the ignorance and desperation of the buyers. The adverse effect of this can be a heavy post-stocking mortalities which could possibly discourage farmers from continuing the business enterprise.
A good hatchery must will have a way of producing equal size of fingerlings of the same age. A good practice is to make certain only fingerlings of uniform sizes are offered out as a batch to customers.
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