that kinda makes sense,btu when anything remotely food-like touches the water my fishh are on it in seconds. my mom put some in her tank(still frozen),and the fish(angels and gouramis) had eaten it before it had a chance to thaw. IMO,its like eating frozen pizza when its still frozenmaybe its just me, but I find frozen food thaws/defrosts really quickly.
To the point that the heated aquarium will quickly melt the ice.