Abstract
Adults of Paradise fish Macropodus opercularis are easily maintained in the laboratory. The fertilized eggs of Paradise fish were natural inseminated and incubated in room temperature (range 22.5 to 25.7°C). We carefully observed the process of embryonic development and divided them into 28 stages based on diagnostic features of the developing embryos. The principal diagnostic features are the number and size of blastomeres, form of the blastoderm, extent of epiboly, development of the central nervous system, number and form of somites, optic and otic development, heart development, blood circulation, the size and movement of the body, and development of the tail.
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