Can 12 Chromis be introduced at the same time into a 190g?

[Dearth]

Originally Posted by reefwithareefer

So I know that there is a strong chance that one can become dominant and kill off others. But are you joking when saying it can turn on himself because of a reflection? Does this happen to many other species as well?

Yup most fish species if they see an image of itself can attack as they perceive it as a threat to their dominance so will attack their own image