Niger Trigger dying or just lazy?

[chrismilano]

I have a 1 year old Niger Trigger in a 72 gallon tank with a lion, clown trigger, and ribbon eel. The triggers always got along, but I think the clown got a quick bite out of the Niger's top fin. Nothing big or serious, just a quick bite.
The Niger has been hiding under a rock for over a week, almost lying on his side. He occasionaly comes up for a quick bite of flake food, but returns quickly to his cave, 27/7. Almost as if he's scared out of his wits.
The water is fine, the other fish are ignoring him. Is this normal, or is he in trouble?

 

[beth]

No, it isn't normal, especially if the fish was acting differently before the incident.
Do you have a QT that you can move him to? Or move the aggressor to?

 

[chrismilano]

I'll have to try removing him for a bit. How long would you recommend?