Sudden aggression

[Glenng78]

All of the sudden out of nowhere , my powder blue and the bigger of my 2 ocellated began to attack my bangai cardinal. He’s the oldest fish in my tank , and now he’s missing some of his ornamental fins. Anyone else see this happen ? Any tips ? Thanks guys

 

[Glenng78]

Ocellaris clown is what I meant , not ocellated

 

[Glenng78]

No one ?

 

[PBnJOnWheat]

I mean from my experience, fish when they’re stressed or hungry or whatever reason. Could be a bad day idek they can be more or less aggressive to others. Some days are decent but others can be rough. I could be wrong but I think it’s always a good thing. They are just hangry. That doesn’t always stop it but feeding and keeping them fed seems to result in more coral stability and happy calm fish