That makes sense then. Even though they are both new to the tank, the senegalus has been used to being top bichir. It perceives the new one as competition for food probably.
The good news is that the aggression rarely gets out of hand, and left to their own devices with close supervision, they should be just fine.
The good news is that the aggression rarely gets out of hand, and left to their own devices with close supervision, they should be just fine.