Adding new fish can cause old fish to get crazy? Lake Malawi predator Haps meet a tiger…. Bass

I took the tiger large mouth bass out of the 150 gallon tank and added him to the 300 gallon tank and then two old fish started acting out towards each other. And occasionally towards the bass. But things have already began to calm down and get better let’s see how it goes long term as the bass far out grows the haps.