Arowanas

They can live up to 25 years with proper care. By User:Qwertzy2 - Taken by User:Qwertzy2, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=226294

They can live up to 20 years with proper care. By Jutta234 - Own work, CC BY-SA 3.0 de, https://commons.wikimedia.org/w/index.php?curid=10305056

By P. Smit, J. Green - Boulenger, George Albert; Loat, L. 1907. The fishes of the Nile. London, Pub. for the Egyptian government by H. Rees, ltd. Pl. XIV. doi:10.5962/bhl.title.51710 http://www.biodiversitylibrary.org/page/35727320#page/62/mode/1up, Public Domain...

They can live for 8-12 years with proper care. By Ginkgo100 - Own work, CC BY-SA 3.0, https://commons.wikimedia.org/w/index.php?curid=754454