ID this sucker cat

I had a young one and as soon as I put it into a tank with other fish it started nipping, and had killed one by next morning. It was sold to me as an SAE; got the only CAE in the bunch. Therefore, IMHO, they can be quite aggressive when young, too.
 
"Maximum length is 27 cm (11") but normally it doesn't exceed 15 cm (6") in an aquarium"

"Young Chinese Algae Eaters can be kept in community, but adult specimens can be aggressive to other fish. They most often attack slow-swimming, flat-bodied fish and shouldn't be kept with them."

All taken from
http://www.thekrib.com/Fish/Algae-Eaters/
 
AquariaCentral.com