Fig. 5
From: Surface morphology of the oral cavity of redbelly tilapia, Coptodon zillii (Gervais, 1848)
SEM photograph shows the lower valve in views (a, b, and c) and the tongue in views (d-g). e- central elevation of the tongue, d- depressions, LCT- lower caudal teeth, LV- lower valve, r-ridges, Ta- Lingual apex, Tb- lingual body, Tr- Lingual root, TB- taste buds. The yellow arrowheads refer to slightly elevated epithelial protrusions. The red arrowheads refer to highly elevated epithelial protrusions