Sorry man, I get what you mean I really do, but I'm pretty sure I can keep two small motoros healthy for 2 months in a 125, as I am committed to upgrading to a larger tank. And I've done enough research to realize the smaller rays are easier to keep due to size, but are much harder to get feeding, acclimate, and breed. Motoros, from what I have found, are much more forgiving on water parameters, feeding, and breeding. Yes, everyone, i am selling off my stock, I've sold a few already now so that's not going to be an issue. What makes everyone else so much better to keep rays but I can't? Small rays in a big, not huge, tank will be perfectly healthy for just 2 months until they are in a huge tank that I will have to spot feed them in.