Hi guys, When i first started my aquarium, there were only a few survivors - 1 guppy and 3 tetras out of 3 guppies and 4 tetras originally. Then i introduced 3 more guppies bearing in mind that one of the new ones are actually bigger than the others... i just thought it grew bigger than the others. It seems that the lone guppy originally in the tank seems to be chasing all the new guppies. When one of the newer ones fought back, the lone ranger turned its attention to the bigger one. After some time, it seems that all guppies seem to be nipping the tail of the big one and chasing it all around the aquarium. Two days later, the big one died, which is sad but i really coud not get more info at that time. I'm hoping that someone will be able to advise me more on this so that this never repeats again for me. Advice will be greatly appreciated!!