Okay, so I'm planing on heading over to Petsmart later to see if theres any small gravel pump things, and maybe get a fish in need of, well, rescuing. I have two 1.5 gals in the closet, and was going to see if theres any bettas that don't seem too sick. My last one from Petsmart lasted three months, but that couldve been from anything.
My question is, is there any way to see if the fish are healthy in the cups before taking them home?