What are these marks on my African knifefish?

[Irecruitfish]

Disease or a beat down?
Tankmates have been around for years except a 9" silver arowana.
8" fire eel
6" rocket gar
2 electric blue acaras
4" dolphin Cichlid
5" African leaf fish
2 syno petricola catfish
125 gallon

 

[kno4te]

Beat up! Should heal up quick with clean water and as long as it’s eating.

 

[Irecruitfish]

Beat up! Should heal up quick with clean water and as long as it’s eating.

Crap I wonder who. Do you think an arowana would do this? Only other one I would think is the dolphin Cichlid. I've seen them bicker lightly before.

 

[kno4te]

Crap I wonder who. Do you think an arowana would do this? Only other one I would think is the dolphin Cichlid. I've seen them bicker lightly before.

I’d assume the cichlid and aro. In that order.

 

[Irecruitfish]

I’d assume the cichlid and aro. In that order.

Well I guess that's what I get for not feeding the aro for 3days.

 

[celebrist]

That size tank things will likely get worse for all your fish I feel
I have kept several African knife fish over the years and never observed any aggression towards them but I never housed them with cichlids

 

[Hendre]

Unusual that fins are 100%. If something bullies them then fins are usually the target..

 

[Irecruitfish]

That size tank things will likely get worse for all your fish I feel
I have kept several African knife fish over the years and never observed any aggression towards them but I never housed them with cichlids

No plans to keep the aro and fire eel in there long term. May sell the knifefish as well.