cdubbs,
if you like him in there by all means than keep him im just throwing my friendly opinion out there
also you need ALOT more rockwork for the shark to hide in heres a pic of my two rock structures, they both have "caves" and one of them has a shelf on top of the cave also.
sorry the pics arent good, also the pics are deciving this piece of liverock running sideways on the bottom of the structure is 13 inches long and it is set out from the back 15 inches which is ALOT of area for a shark or ray to hide in
heres the deeper larger cave its about 22x22x16 high(enough room for a juvi shark to hide in and turn around in