Arowanas are under the Scleropages group of fishes...also known as the bony tongue...They are mouth brooders. The mating process is an interesting sight! The pair sticks together, with the female dropping her eggs and male emmitting his sperm in a cloud simultaneously. The Male then scoops up the eggs in his mouth to incubate them, only during feeding does he allow the fries out to feed. If I manage to find any farm pictures, I will post them here on the Harvest experience.