Fig. 4From: Differentiation of visual spectra and nuptial colorations of two Paratanakia himantegus subspecies (Cyprinoidea: Acheilognathidae) in response to the distinct photic conditions of their habitatsLight spectra of the sampled habitats of studied species. a Upward light in air; b underwater upward light; c underwater sideward light. Light spectra shown are the geometric means of the measurements at the respective collection sites. Red: habitats of P. h. himantegus; Blue: habitats of P. h. chii. The original data are provided in Additional file 1 Back to article page