Suckafish attacks

That moment when, whilst on tiptoe - arm submerged in fish tank to shoulder - attempting to anchor errant plant, some slimy thing of substance makes contact with my hand. And being the beast I am - I scream. Now Suckafish and I are both scarred for life. Not sure if it was fishy fury or pure terror but he was all over that tank, vaulting from the water and trying to get back into his spot which my hand was still occupying. Totally his fault. If he actually ate all the algae and stopped uprooting plants with his shenanigans , I would not be invading his space.