mostlycichlids
Cichlid Specialist
Uh the pleco.the plecos or the africans??
I really couldnt see a cichlid attacking a 12" long pleco... but I guess anything is possible
Thats why I said "borderline".. A smaller common would do ok in a 55g.. but generally they get much to big-- it would depend on the particular fish you have and how large it is going to get (which is hard to determine)