Answer: Fish
Notes: The Silver Croaker, a top fish predator in Jaguari reservoir, Jaguari River, and Rio do Peixe, has led to a significant decline in native species diversity. Its impact on taxonomic, functional, and phylogenetic structure has been detrimental. This large predatory fish, native to the Amazon, is rare among freshwater croakers, characterized by its silvery scales. Vital for subsistence and sport fishing, its decline poses ecological concerns for the region's biodiversity.
