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From Ohio Aquaculture Research and Development Integration Program (OARDIP) Newsletter Indoor Perch Larvae Nursery

Recently, researchers have successfully nursed perch larvae and fry in an indoor aquaculture system at the OSU South Centers Aquaculture Research Center. Experimenting with an indoor culture and production system for marine rotifers, and using algal paste to supply the rotifers, and then intermixing rotifers with artemia and microdiets, approximately 50% of the perch fry were successfully reared and transferred to a complete artificial diet. Researchers have been able to successfully hatch, maintain, and grow multiple tanks of yellow perch fry using this approach. This breakthrough will allow more control in perch rearing and eliminate variables such as weather and temperature. Future experiments with this process will follow. Yellow perch is the most popular aquaculture species in Ohio. One roadblock hindering expansion has been low survival and availability of fry and fingerlings. The survival rate of traditionally pond-nursed fry is dependent on weather and late winter storms killing the fry in ponds overnight. Yellow perch can reach market size in one year with a constant temperature and photoperiod in an indoor system, which limits sexual maturation. Therefore, developing the indoor culture of yellow perch has significant advantages over pond culture. Limiting this possibility has been the poor indoor survival of newly-hatched fry to the stage where they are completely feedtrained. Developing techniques to increase indoor survival of larvae and fry using live feed will have a significant impact on the yellow perch industry development


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