July 25th, 2012. Rio Amazon This area has only 2 exhibits, one large one with a variety of species and one smaller one with red piranha hovering over fake cattle bones. Species list for the main exhibit includes some rarities: dwarf caiman, arapaima, redtail catfish, arowana, red-bellied pacu, ripsaw catfish, duckbill catfish, oscar and smooth back-river stingray.