Fig. 80 in Systematics of the Neotropical fish subfamily Glandulocaudinae (Teleostei: Characiformes: Characidae)

Fig. 80. Mimagoniates microlepis, male, USNM 279876, 51.7 mm SL; central basal region of caudal fin adjacent to caudal peduncle (at left), lateral view, left side, anterior at right. Illustrates external features of caudal organ including fin-ray pump chamber. Arrow at left indicates anterior intake opening, middle arrow points to lateral slit in pump chamber, and arrow at right designates posterior exit opening. Modified dorsal lobe caudal-fin squamations translucent and difficult to see but represented by light circular "ghost" images over the dorsal surface of pump chamber and posterior to chamber. Modified from Menezes & weitzman (1990).