Complex sentence: Some Loricariidae species have been widely introduced to several countries around the world and reported as "H. plecostomus", though the concerned species belong to the genus "Pterygoplichthys" (either "P. pardalis" or "P. disjunctivus").
Split into simpler sentences: Some Loricariidae species have been widely introduced to several countries around the world and reported as "H. plecostomus". It is erroneous, and the concerned species belong to the genus "Pterygoplichthys" (either "P. pardalis" or "P. disjunctivus").