I live in South Africa, Gauteng, highveld region. One of my aquariums is a 240 gallon aquarium, with a tiger oscar and two red belly pacu. Tiger oscar is around 20 cm, and one pacu is also 20 cm, my other pacu however is now 33 cm, and I got all these fish at the same time about 11 months ago, grown them all from an inch long. I feel my tank is now getting to small, and I want to get rid of the smaller pacu, who seems to have stopped growing at 20cm for a few months now. I have a friend that lives a little higher up in the province and she has a dam that has been built on her farm. I am welcome to let my pacu go in it.. Its not a huge dam and they keep barbel, karp and swans in it. The water temperature there drops to between 14 and 16 degrees Celsius in winter. Can my little pacu survive in this temp? Sorry about the long post.