I have a common pleco I bought years ago who just keeps growing. He's in my biggest tank ( a 120G ) but is starting to get too large, he's now about 18 inches. I know a man with a 350G who's looking for a large pleco so I have decided to move him on. I will be sad to see him go but I know he needs a bigger home. I will need to buy a new pleco to replace him but I will go for something that doesn't grow so big so it's time to start looking at the options for my new plec.