Retrograde Positive Contrast Urethrocystography of the Fish Urogenital System

Figure 2

Tinca tinca: right lateral radiograph; inset: diagram of the urogenital system of T. tinca: anal pore (small arrow), genital pore (white line), urinary pore (dashed arrow), urethra (arrow head), (1) intestine, (2) gonadal ducts, (3) urinary bladder, (4) kidney, (5) gonads, and (6) ureters.