Correction to: Hydrobiologia (2020) 847:421–442 https://doi.org/10.1007/s10750-019-04104-0

Due to an unfortunate turn of events, the incorrect caption of Fig. 2 appeared in the original publication. Figure 2 and its correct caption is published here and should be treated as definitive.

Fig. 2
figure 2

Morphotypes and pigmentation patterns of individuals belonging to two parental species A. charrua and A. reicherti and their putative hybrid populations. Males of A. charrua (A–D) from putative hybrid populations (E–H), and males of A. reicherti (I, J). Females of A. charrua (K), the putative hybrid populations (L), and from A. reicherti (M)