Comparative analysis of Zooplankton in Diet of two Ornamental Fishes (Hemichromis bimaculatus and Poecilia reticulata) in Limca Reservoir, Jos, Nigeria

The cultivation of zooplankton as live feed offers a cost-effective solution to the high expenses associated with fish feeding.This study investigated the feeding habits of two ornamental fish species-Hemichromis bimaculatus and Poecilia reticulata-through gut content analysis of specimens collected from Limca Reservoir in Jos, Plateau State.The aim was to identify the specific planktonic organisms selectively ingested by these fish.A qualitative analysis of their stomach contents was conducted, and plankton components were identified to the genus level.T-test was used for the analysis and descriptive analysis.Fourteen zooplankton taxa were identified in the gut of Hemichromis bimaculatus, while eleven were found in Poecilia reticulata.Rotifers were the most dominant group, followed by cladocerans.The high frequency of occurrence of species such as Conochilus sp., Brachionus angularis, and Daphnia sp.suggests a dietary preference for these organisms.Based on these findings, these zooplankton species are recommended for mass culture and use as live feed by aquarium hobbyists and ornamental fish breeders.