Regeneration?

[calvertbill]

I know this isn't an unknown malady but I thought I'd ask.

A Sailfin Tang which I had been keeping in a 90 had a major chunk of his dorsal fin eaten by a hermit. I moved him to the 450 and he's overjoyed by the new digs. I swear he's grown 3/4" in the last couple of months. He's eating well and is active but I see little change in the damaged fin.

Will it ever grow out?

 

[Mr. Bill]

While crustaceans and certain other inverts enjoy the power of regenerating lost or damaged limbs, etc., unfortunately I've never seen, heard, or read of it occurring with fish.

 

[Wolverine]

If it's just the flesh of the fin, it can sometimes heal. If the fins themselves were torn out, then it won't.