08/27/2026
Amazon River Monster Fish of Aquarium at Moody Gardens. It is Humongous
The arapaima (Arapaima gigas), also known as the pirarucu, swimming in a shallow, captive water feature.This massive freshwater fish is native to the Amazon and Essequibo river basins of South America and ranks among the largest scale-covered freshwater fish.Because they have lung-like tissue in a modified swim bladder, these animals must surface regularly every few minutes to gulp air.