Tucanoichthys tucano, specimen TCWC 20316.01, 14.4 mm SL, c&s. A. Dissected dorsal and anal fin and supporting skeleton, left side, lateral view. B. Base of first-sixth dorsal-fin rays showing articulation with pterygiophore elements, left side, lateral view. C. Base of fourth-eleventh dorsal-fin rays showing articulation with pterygiophore elements, left side, lateral view. D. Base of first-seventh anal-fin rays showing articulation with pterygiophore elements, left side, lateral view. E. Base of fifthteenth-twenty anal-fin rays showing articulation with pterygiophore elements, left side, lateral view. Abbreviations: AFSC, anal-fin stay cartilage; DFS, dorsal-fin stay; DR, distal radial; FR, fin ray; MR, middle radial; P-MR, proximal-middle radial; PR, proximal radial.