Abstract
The levels of aeration intensities on growth and survival of fingerlings of Indian major carps and exotic carps were evaluated during March-June 1994 in three carp ponds of 0.08 ha each, the treatments being provision of one aerator and two aerators operated for 4-6 hours daily during late night hours along with a control without any aerator. The ponds were stocked al 50,000 fingerlings per hectare with catla, rohu, mrigal and grass carp at a ratio of 30:35:30:5 and reared for a period of 90 days. The results demonstrated the positive effect of aeration intensities on fish growth and survival rates of all the carp species. The influence was observed to be minimum on mrigal and maximum on grass carp.
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