Figure 4 from: Jelić D, Jelić M, Žutinić P, Šimunović I, Zupančič P, Naseka AM (2018) Distribution of endangered Italian gudgeon Romanogobio benacensis (Cypriniformes, Cyprinidae, Gobioninae) with remarks on distinguishing morphological characters. ZooKeys 729: 103-127. https://doi.org/10.3897/zookeys.729.20615

Figure 4 Lateral view of the head of Romanogobio benacensis (a) and Gobio obtusirostris (b); the 1st and 2nd infraorbital bones are shaded. Scale bar 1 cm.