Anyone have ideas on why my Red Head Tapajos have become aggressive towards each other when for more than a year they got along fine. I had 4 Red Head Tapajos and 2 Oscars in a 100 gallon (5 foot long) tank for over a year and everything was fine.
During a failed move of the tank I lost 2 of my Red Head Tapajos that jumped out of the container I was keeping them in during the move. Now the remaining 2 are always fighting with one another, when they never fought at all before. Fish are in the same tank, same decorations and they don't fight with the Oscars and the Oscars don't bother them. Any ideas?