Hello everyone! A new member, so I apologize if I step on any toes. I have an 80 gallon coldwater aquarium, primarily with fancy goldfish, but with a common pleco and three dwarf plecos. The common is about 8" long and is starting to get agressive with the other fish, so it's time to find it a new home. The dwarf plecos are not aggressive and are very active in the morning and evening. Here are the fish in question. I'd like to ID them so I can be sure that they are being properly fed and cared for.
I've been told that this is a Royal Pleco from a local shop:
I've been told that this is a Rubber Lipped Pleco (from Petsmart, I think):
And this one is also from a local shop. I totally don't remember the species name, though to their credit, they did try to identify it. Do you know what it is?:
Any advice help on ID'ing these fish or advice on feeding and care would be greatly appreciated.