Left side of the fish specimen (Male of Profundulus chimalapensis) shows the location between the dorsal fin and lateral line, where the key scales were removed. Dotted circles indicate organs’ contact clusters.

  Part of: Velázquez-Velázquez E, Domínguez-Cisneros SE, Anzueto-Calvo MJ, Maza-Cruz MF (2022) Occurrence of contact organs and sexual dimorphism in fishes of the family Profundulidae (Actinopterygii: Cyprinodontiformes). Acta Ichthyologica et Piscatoria 52(4): 261-265. https://doi.org/10.3897/aiep.52.93669