FIGURE 1 in Gobies (Teleostei: Gobiidae) of the oldest and deepest Caspian Sea sub-basin: an evidence-based annotated checklist and a key for species identification

FIGURE 1. Caspian Sea and its catchment. Delineation of the Caspian Sea "marine" areas: N, North Caspian Sea; M, Middle Caspian Sea; and S, South Caspian Sea. Here, these "marine" areas along with their respective catchment areas, are referred to as the North Caspian Sea sub-basin, Middle Caspian Sea sub-basin, and South Caspian Sea sub-basin, respectively. Az, Azerbaijan; Ar, Armenia; and Ge, Georgia.