I have a tank that contains 4 angelfish, two pictus catfish (pimelodus pictus), a bristlenose pleco and three large golden barbs. It is a large tank that is suited to those fish but I fear for the life of the other inhabitants. I also have Candy cane tetras (rosy tetras) and Black widow tetras. They are not particularly large fish and I know that many tetras have been part of the "disappearing act" in which a larger predatory fish decides that they are a good alternative to their usual diet. My pims are very small as of now, and my angels seem to be ignoring the other species (they are much to busy competing with one another). My bristlenose pleco is four inches but is about as active as a rock during the day. Algae and vegetables are the only things I can imagine him eating. I know how large pims can grow though and of their predatory habits. I am worried that my beloved pictus catfish will soon become capable of eating the tetras. I am thinking of moving the tetras to a smaller tank, but it will need to be cycled a bit. I would prefer not to though. my father would not favor the idea. Please tell me what would be a good choice. I am not in need of any immediate action but I would like to know if my pims could and would in fact eat the tetras when they reach full size and if there is anything else I could do to prevent it.