Distribution area of the two pike species in France (Esox aquitanicus in red, Esox lucius in its native area in blue and introduced in green) (modified and adapted from Keith et al., 2020; Denys, 2017), with examples of typical habitats of both species: the Sèvre nantaise (A) as a large river with many aquatic vegetation and the Ciron stream (B) as watershed with a poor environment (sandy substrate and no aquatic vegetation except stumps); credit photos: G. Denys.