Preserved specimen of Cryptocentrus shigensis (SAIAB 208619, 41.1 mm SL). (A, E) and (D), left and right sides of body, respectively; (B), close-up of head, showing cephalic sensory system; (C): close-up of 1st dorsal fin (right side). Yellow dots and red circles indicate sensory papillae rows and brown blotches, respectively. AN and PN indicate anterior and posterior nostrils, respectively. Arrow head indicates anteroventral end of gill opening.