A man went two years before noticing something incredible living inside his fish tank.
He discovered a massive bristle worm, also referred to as a Polychaete living inside.
“It hides in the rocks, and only comes out at night, impossible to catch without taking everything out the tank,” the uploader wrote. It measured 1.2m long.
I was breaking down the tank (as I was moving it), hence it looking shoddy. That unice was in there 2 years before I noticed, and only noticed because I had whole coral colonies missing after a single evening. I first saw it after I spent a few nights sat up (after lights went out) for about 3 hours per night looking for the critter who was eating my corals. Even when I knew it was there, I only ever saw it 3 times within the space of a year. It hides in the rocks, and only comes out at night, impossible to catch without taking everything out the tank.