Spermatogenesis and Spermiogenesis of the Aphanius Dispar

Light and transmission electron microscopy were used to study the structure of various stages of germ cells of the Aphanius dispar (Ruppell l828) in Oman. A dispar testes were of cystic type. Different stages of spermatogonia, spermatocytes and spermatids were observed within the cysts. Each cyst is occupied by a group of germ cells almost all in the same stage. The morphology and ultra structure of the nuclei and cytoplasmic organelles of the germ cells are described. Some flagella possessing lateral side fins and some biflagellated spermatozoa were seen