Fig. 3
From: First reference on reproductive biology of Butis koilomatodon in Mekong Delta, Vietnam
Histology of testis of Butis koilomatodon (a, b, c, and d labelled for histology of testis stages I, II, III, and IV, respectively). Testis sections show spermatogonia (S), primary spermatocytes (SC1), secondary spermatocytes (SC2), spermatid (ST), and spermatozoa (SZ). Scale bar: 10 μm for histology