how big of a pleco should i put in my 55 grow-out tank if there is a 5" female jag in there. She seems to eat or pick on what ever goes in that tank, and i was want a pleco or 2 in that tank. Will she just eat small ones or will it leave them alone, it left my peacock eel alone when it was in there it was about 10" so let me know your thoughts.