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Live feed (rotifer) has an important role in fish seed production. The type of rotifers used in this study is  Hexarthra mira. Hexarthra mira  is included in monocyclic species which only has sexual periods in autumn and in winters  Hexarthra mira  is found in a dormant egg. Water quality greatly affects the growth and survival rate. This study was aimed to determine the effect of  Hexarthra mira  on water quality in culture media on population and production. Different stocking density as a treatments were as followed A) 1 ind/ml; B) 2 ind/ml; C) 3 ind/ml; and D) 4 ind/ml. The results showed that  Hexarthra mira  density can influence (P&lt;0.05) water quality on the pH parameter. High stocking density (C and D) were significantly higher than that of A and B in term of population and production (P&lt;0.05).

Stocking density of Rotifera, Hexarthra mira on water quality and production