Will it be fine in the tank though? I know most Cories need to be in groups of 4 or so... Also, will it eat the food I feed my pleco? And will it harass the neon tetras or ghost shrimps?
They really should be in groups to keep them in good health. Very social groupers. It won't pose a threat to any thing else in there and will eat pretty much anything that hits the bottom.
As for the species, I unfortunately can't advise on that. I'm not much of a cory expert.
I made 3 trips to the store already in a 24 hour period... I'd hate to go back again. Besides, it would be nearly impossible to catch this fish because it's constantly moving and it moves very fast too.