OK so heres my problem. I have 2 tiger barbs and 2 albinos. For a while one of the albinos was bullied but everything was fine until today. One of my tiger barbs seems to be swimming back and forth and the bottom of the water, almost like on patrol. Now the other tiger barb and 2 albinos have been hiding in the plants. Now i looked at the tiger that was being agressive and noticed that the tips of his fins a were much brighterred than the other tiger barb, who he seems to constantly chase.The agressive one is also slightly smaller. Now i dont really know what to think of now, maybe theyre mating, i have no idea. What do you guys think?