red belly p's are very skittish in tanks...they come out on occasion but usually when the lights are off...if i walk passed the tank, i sometimes see them bumping into the glass...when they are hungry and i put food in, they generally go right after it though...
the "lobster" on the other hand...he is usually walking around the tank...
i alternate between feeders that have been properly kept in a QT tank and that i know are healthy and frozen pre-cooked shrimp...