Posted: Thu Jun 10, 2010 7:48 pm
It depends on your turtle's attitude and on your tank. If your turtle is aggressive, no fish will stand a chance.
If you have plenty of hiding sposts, vegetation and so on go with little fish which breed fairly quickly , like most live bearers (guppy, molly, mosquitofish etc.).
Otherwise i'd say goldfish because they're really cheap and grow up to a big size, plus they have among the most interesting behaviour, sociality and curiosity.