a 60,000 litre tank housing long-finned eels (Anguilla dieffenbachii), a species endemic to New Zealand. This is the largest freshwater eel species in the world. Most of the ones in this tank are in excess of six feet long, and the estimated age of most of them is between 80 and 100 years. One individual in here is estimated to be 120 years old or more.
January 2012