i was bored and just reading through some stickies about the rays just because i always wanted one. i was told by my lfs that even the teacups get 3' across but i read where the ideal tank for a teacup would be minimum 75 or larger. so that got me thinking that i could possibly house one. i gotta do more resarch on them first. but i have a 120, 125 and couple of 55g that i could switch my stock around to make it work if the teacup could be housed in either the 120 or 125 (120=60"x18", 125= 72"x18"). thanks for your help. like i said i dont know a ton about them but i know the basics and i will know more before i buy one. just let me know your opinions.