A new record of the invasive vermiculated sailfin catfish Pterygoplichthys disjunctivus in the Wainganga River, Eastern Maharashtra, India

Abstract

This study documents the presence of an exotic loricariid catfish species, Pterygoplichthys disjunctivus (Weber, 1991), in the Wainganga River of Maharashtra, India. Originally native to South America, sailfin catfish are now commonly used as ornamental fish beyond their natural habitat. The species was observed near Gosikhurd Dam (20°52'15"N and 79°37'00"E) along the Wainganga River. Two individual specimens were collected during the study, with average total length (320.31-338.63 mm) and weight (500.21-540.31 g). The rapid expansion of these species and its potential impact on local fish populations and inland fishing resources have raised concerns. Immediate preventive measures are necessary to control the establishment and subsequent uncontrolled spread of P. disjunctivus, may be imminent which would be pose a threat to the freshwater biodiversity of the River Wainganga. Effective management strategies should be implemented to preserve the natural habitat of these species. This study provides the first documented occurrence of P. disjunctivus, a member of the Loricariidae, near the Gosikhurd dam on the Wainganga River in Maharashtra, India.