Fig. 3 in Description of a new species of Phenacostethus (Atheriniformes: Phallostethidae) endemic to Kalimantan Selatan, Indonesian Borneo, reveals deep mtCOI divergence among miniature species

Fig. 3. Phenacostethus sikat, holotype, MZB 25501, male, 13.4 mm SL. A, lateral view of head and priapium; B, ventral view of head and priapium; C, lateral view of priapium focused on brush—like seminal papilla. Phenacostethus smithi, USNM 329582, male, 16.1 mm SL. D, lateral view of head and priapium; E, ventral view of head and priapium; F, lateral view of priapium focused on ruffled seminal papilla. Bars = 1 mm.