He was sucked up against the pump earlier so I thought he must have gotten too close so I helped him out and put on the guard just in case. Come back an hour later and he is willingly swimming into it.
They are stupid sometimes.
I have a Starry Blenny that loves to stick his head way into the Nero 5 powerheads when they are turned off at feeding time. I think he is attempting to eat algae off of the inside. Unfortunately my controller automatically turns them on again, and I’m cringing at the idea that someday he may get guillotined!