My 2 cobra's are acting very strange. All of a sudden they have stopped eating and both are staying together under a piece of pvc. I haven't been able to get them to eat for about 3 days. Every time the smaller pike leaves the spot the larger pike starts flicking off driftwood, gravel etc then the smaller pike goes back to the same spot. I'm starting to get alittle nervous here. any idea whats going on? I'm pretty sure its a male and female and they are about 6.5 and 8 inches. Aren't they to small to be breeding? what else could it be? should i treat the tank? I need some advice here.