retic's are the smallest but still need a large footprint. read the stickies, they've got everything. the term "teacup" can be used for any pup, before you buy, learn to identify what it is so you don't end up with something else.
True hystrix are your best bet when it comes to the smaller rays. Retics are hard to acclimate. If you buy the cute little 3 inch rays you see in the lfs, don't get upset if it dies on you because it probably will. Make sure whatever you buy is already eating especially if it is your first ray.
ok will do, the only rays ive ever seen were at ricks fish and pet as well as house of tropicals, anybody know of the quality of the rays who are kept there?