Fig. 2.

Fig. 2. Posterior end of swimbladder showing post-coelomic diverticula. (A) Ilisha melastoma, dissected on the left side (12 cm standard length) showing the presence of two post-coelomic diverticula; (B) Ilisha elongata, dissected on the left side (42 cm standard length) showing the presence of one post-coelomic diverticulum; (C) Three diagrams (ventral view) summarizing the three conditions regarding to the presence (versus absence) and number (one or two) of post-coelomic extensions in Pristigasteridae.