I have had my BN plec for about 3 weeks now, it hardly active, and only just come out recently for feeding when I drop in the pleco wafers, All he does at the moment is stick on to the glass in the same spot all day untill I drop his wafers then he "headbutts" fishes of his food and sucks it, then goes back to the same spot. It is a male BN plec, I was wondering what could I do to make it more active, Should I consider getting it a female BN friend? Please help , thanks in advance.