So I recently introduced a small hippo tang to my 75 gallon (will be upgrading to 100+ soon). He eats, swims, and gets along well with my other livestock (inverts, 2 perculas, 2 chromis, 1 gobby, and 1 blenny). Anyway, I am wondering if it is normal for tangs to be VERY shy until they settle in? Other than feeding time (even sometimes during feedings) he hides in a small cave that he has to lay on his side to squeeze into. Thanks guys! 
