Hi, about a year ago I purchased a bristlenose that turned out to be a gold spot sailfin pleco. It is about 20cm long now and I am wondering how big it will grow to be and how bigger tank I will need to keep it. I love it to bits and it's really pretty. I don't want to sell it but I can't afford a huge tank to keep it in. the tank I've got it in at the moment is reasonably large (not sure of measurements). Any advice would be greatly appreciated , thanks.