Figure 3
Histological section of gill filaments in (A) Carassius auratus and (B) Astronostus ocellatus show (1) secondary lamellae, (2) filament epithelium, and (3) venous sinus (H & E, 20X).
Histological section of gill filaments in (A) Carassius auratus and (B) Astronostus ocellatus show (1) secondary lamellae, (2) filament epithelium, and (3) venous sinus (H & E, 20X).