I work at a daycare center and we've had a male betta in our classroom for nearly seven months now. He's grown from a little guy into a fairly large one and over the past month or so I've noticed an aggresive change in him.
George was always pretty mellow and I keep him on a high shelf so none of the children can tap his tank or upset him and for the most part it's not very loud in the room. He's always been very friendly towards me and to be honest fairly loving when I feed him, he usually nuzzles my fingers.
Well for the past month or so I've noticed that George tends to flare out at me or anyone else whenever we walk past the tank or feed him. He's gotten very aggresive, going so far as to ram himself into another teacher when she put her fingers into the water.
I'm curious if I am doing something wrong or if he is stressed or what. I miss my loveable fish.