Getting 2 female "teacup stingrays" not exactly sure what species they are. So I know I cannot get a for sure answer but how long do you think 2 - 4" female rays will be ok in a 125g??? I ask because I am in the process of building my basement around a DIY plywood tank build which will be their permanent home.... 12x4x3 but I do not want to be rushed. let me know what you guys think. I would have to assume they will be good in there atleast a year.