This guy is weird. This morning, I dropped a cube of frozen plankton into the tank. Now, almost 10 hours later, he starts picking off the thawed bits of plankton on the tank floor. He has totally no interest in the shrimps (not brine shrimp) swimming around in his tank; instead he waits for me to drop a cube of frozen food like bloodworm, brine shrimp etc then waits for them to sink before eating them. This is not the first weird pike I have. My female is also rather sadistic, decapitating feeders instead of eating them!