I wouldn't, I've had Colombian Tetras and they badly beat up my Angelfish's fins. Hate to think what they would do do Fancy GuppysSorry to jack the thread, but would having fancy guppies with columbian tetras be a bad idea? I have 5 columbian tetras which i was told can be quite nippy, havent had any trouble with them and any of my other fish so far, but i dont have any fancy fined fish at the moment either.
