Sick ghost knife fish

[angelaquatics]

Hello!

I'm a new member to this forum but long time fish enthusiast!

I have a ghost knife fish who is ~9 years old. Many years ago he had an injury to his long fin which healed with a slight scar.

However recently I've noticed that the scar has turn a light brown/white colour.

His behaviour remains fairly normal, although I would say he is less active than his usual self. I've attached a photo of his long fin with the problem area circled.

Does anyone have any suggestions on what this could be?

Many thanks!
Michael

 

[itiwhetu]

Photo of the whole fish could help. Maybe it is just getting old.

 

[angelaquatics]

Thanks - great idea I've attached some more pics. He is getting up there in age...

 

[itiwhetu]

He looks fine. What I would do is make his environment less complicated. More plants less toys.

 

[angelaquatics]

I hope you're right!

 

[Ichthys]

Hard to tell what’s colour and what’s reflection.
Can I also add that it’s a very ghost-unfriendly tank. They want open space with a strong current, ideally. If the markings are just different coloured areas it may be stress.

Nice male btw, most tend to be females.

 

[angelaquatics]

Thanks for the suggestion! I added an extra air pump to the tank and pushed the temperature up to 26-27c and he's already more active.