Porcupinefish has wonky fin

[jasonrusso]

I got this porcupinefish about a year and a half ago. I've had them in the past.

When I got him, his pectoral fin was kind of torn or jagged. I thought it was shipping damage or he got picked on at the supplier.

Well, it's a year later and it's still the same, but bigger, lol. He's fine. Healthy and hungry, just a deformed fin.

Anyone ever seen this before?

 

[lion king]

The initial damage must have been beyond the fin tissue, which resulted in deformed growth. As you stated, healthy, so no need to be concerned. I have seen fins and tails deformed when injuries were in the fleshy parts of those regions.