Species of the genus Moina Baird (Cladocera: Moinidae) are commonly found in temporary freshwater ponds. Some species of moinas are used in aquaculture as valuable protein-rich feed for fish in ecological monitoring of water bodies, and as biological objects in many scientific studies. The aim of this research was to describe the biodiversity of moinas, in particular, species belonging to the genus Moina Baird in some water bodies of the Fergana Valley, in particular, the distribution area, growth, development dynamics, and morpho-biological properties of Moina micrura Kurz 1874. Our results revealed that the aforementioned species can be found in fish farms and some rice fields in Andijan and Fergana regions of Fergana Valley. The biological and ecological characteristics of the mentioned species and aspects of economic importance were addressed from 2021 to 2023.