I just bought a spotted raphael catfish (Agamyxis pectinifrons) from petco about an hour ago. (s)he seems curious...going through the rock and such...checking things out. but when it comes across to my mystery snail (which i've had for a few weeks now) it pushes it aside and the snail gets scared. should i just wait and see how it turns out, or should i take it back while i still can? i have a 20g long. 2 flame tetras, 4 neons, and a black mystery snail *aside from the catfish*