thank you all.
Eken: the stingray is not actually much bigger than the arowana, but the picture does make him appear to be much bigger. nothing to be concern of in my opinion.
MananaP: the clownloaches and the ray does not bother each other much as far as i know. they do fight for food though.
DragonfishExotics: yeah. i agree with you on that. its just fun to watch the little guy munching on crickets. i'll start getting him to eat pallets.