fish under water. arapaima fish - pirarucu arapaima gigas one largest freshwater fish.

actinopterygii ancient animal aquarium aquatic arapaima arapaimidae background beautiful big color colorful coral deep dive essequibo exotic fauna fish fishes fishing fresh freshwater gigas green head lake leather life marine natural nature ocean osteoglossiformes pirarucu predator river scuba sea snorkeling sudis sudis swim travel tropical underwater water wild wildlife