Enric Aparicio is a researcher at the Institute of Aquatic Ecology, Universitat de Girona, Girona, Spain. He received his Ph.D. from the University of Barcelona. His primary research interests lie in biomonitoring of aquatic environments, fish ecology, and freshwater ecosystems, with a strong commitment to the conservation of native fish species. He focuses on understanding the ecological and environmental drivers that shape freshwater fish communities, particularly the challenges faced by native populations due to human-induced pressures and the spread of non-native species. While he has a broad interest in the ichthyofauna of inland waters, his work is especially dedicated to the conservation and ecological study of Iberian freshwater fish, which are among the most threatened vertebrates in Europe and hold significant ecological and evolutionary value.