Aquariums and Fish Keeping

Ha! Indeed salty. Aiptasia is an invasive anemone that can sting fish and corals. It spreads very easily, and is notorious for being nearly impossible to completely remove from a tank. There are some fish that eat it, but they can be picky. I spent $300 a few years ago on berghia nudibranches, which only eat aiptasia, but one of my fish enjoyed them for a snack. That fish has gone to the big fish tank in the sky, so now I have a new shipment coming today.

Pictured is an expensive powerhead that seized when they started growing on it. Not pictured are dozens and dozens more.