| The present study was undertaken to evaluate the condition factor and growth performance of guppy fish (Poecilia reticulata) under controlled laboratory conditions over a period of 103 days. Ten guppy fry were reared in a plastic tank with monitored water quality parameters including temperature, pH, dissolved oxygen, ammonia, and hardness. Fish were fed Artemia and Spirulina flex twice daily. Growth increased from 0.7 cm to 2.1 cm in length and from 0.001 g to 0.3 g in weight. The condition factor (K) ranged from 0.291 to 3.242, indicating improved health and nutritional status. Morphological changes such as fin development, pigmentation, and reproductive signs were also observed. The study concludes that guppy fish can be successfully cultured under laboratory conditions with good growth performance and condition factor, making them suitable for ornamental aquaculture.
Keywords: Guppy, Poecilia reticulata, Condition Factor, Growth Performance, Ornamental Fish, Laboratory Culture
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