Figure 3. Position of otoliths in situ.

Three-dimensionally reconstructed otoliths from a cave (SL = 35 mm) and a surface fish (SL = 38 mm, both females) based on μ-CT analyses. In (A₁) and (F₁) the left asteriscus and sagitta are shown in caudal view. (A₂) and (F₂): dorsal view of left and right lapilli (red), sagittae (blue), and asterisci (yellow). (A₃) and (F₃): brightest point projection of μ-CT sections of the neurocranium and otoliths in situ shown in rostral view. (B–E) and (G–J): SEM images of the left otoliths of the cave and the surface fish in medial (B, D; G, I), rostral (C, H), and ventral views (E, J), respectively. B–C, G–H, asterisci; D, I, sagittae; E, J, lapilli. d, dorsal; la, lateral; me, medial; r, rostral. Scale bars = 100 µm.