Figure 3. Diagrammatic representation of the latero-sensory system and frontal squamation on the dorsal surface of the head in: (a) Nothobranchius melanospilus, UFRJ 6874, male, 39.8 mm SL; (b) Nothobranchius guentheri, UFRJ 8416, male, 34.1 mm SL; asss: anterior section of the anterior supraorbital series; anss: posterior rostral neuromast; psss: posterior section of the anterior supraorbital series; poss: posterior supraorbital series; prn: posterior rostral neuromast. Scale bar: 2 mm.