Fig. 2 in The Global Invasion of the Suckermouth Armored Catfish Genus Pterygoplichthys (Siluriformes: Loricariidae): Annotated List of Species, Distributional Summary, and Assessment of Impacts

Fig. 2. Number of exotic records of Pterygoplichthys spp. by year recorded in the literature. Records with missing dates were treated using the publication date and the single record of "late 1950s" was treated as 1960. A total of 71 records of exotic Pterygoplichthys spp., either individuals or populations, were reported through October, 2017; 55 of these records represented established populations.