Produced in German, this series contains 20 lessons on the intermediate level for teachers to use in foreign language science study.This segment examines the long, carnivorous fish known as the arowana. These fish are found in the black-water rivers of the Amazon basin. This type of fish is known for its unique ability to jump. Jumps of eight feet are not unusual for the arowana. Their jumping ability allows them to jump up and capture insects and even small birds off of tree branches.