Effects of Photoperiod Regimes on Growth Performance of Heterobranchus bidorsalis (Geoffrey St.Hilaire,1809) fingerlings under Laboratory Conditions

Abstract

This is an open-access article distributed under the terms of the Creative Commons Attribution License,which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited. the fish was recorded in T3, followed by T1 while lowest growth performance was recorded in T2. Better feeding efficiency was also influenced by photoperiods as highest feeding rate was recorded in T3. Changes in body pigmentation was more prominent in T3 as H.bidorsalis fingerlings exposed to this regime became black and darker in appearance in comparison to T1 samples which were lighter in complexion. Consequently, it is believed that subjecting H.bidorsalis fingerlings to 0OL: 24D photoperiod regime by fish farmers can lead to improved farm yield and profits to the farmers.