Ring on Oscar?? Help

[Captain holt]

Woke up this morning to check on my Oscar and noticed an oval ring on her side. I honestly have no idea what it is…
Tank is 5ftX1.5ftX1.5ft
Temp: 27.5°c
Ph: 6-6.5
Nitrites and ammonia: 0ppm
Nitrates: 25ppm (about to do a water change)
Filter: 1800Lp/h

other tank inhabitants: Senegal bichir, sailfin pleco, EBA (baby)
I’m really not too sure what to do or how to treat it because my pleco would be sensitive to medications.
Any help would be AMAZING!

 

[itiwhetu]

Either the Bichir or the pleco has had a go at it. Leave it and it should heal.

 

[itiwhetu]

Nice Oscar by the way

 

[Ichthys]

Sailfin plecs are not sensitive to the usual medications. But just keep the water good and you shouldn’t need any.

 

[Wills]

Beautiful fish my favourite type of Oscar

It could be a bit from an other fish but it looks like heater burn to me - is there a way he could have been resting against it? I've had big cichlids that ocasionally rested on or around objects?

Wills

 

[Ichthys]

I’m thinking it probably snagged on a heater clip or something while trying to manoeuvre out of the way...

 

[Captain holt]

Either the Bichir or the pleco has had a go at it. Leave it and it should heal.

Ahhh that would make sense, surprised the little guy had a go at Rudy

 

[Captain holt]

Nice Oscar by the way

Thank you very much, she’s a superstar!

 

[Captain holt]

Sailfin plecs are not sensitive to the usual medications. But just keep the water good and you shouldn’t need any.

Thank you, I always thought that all plecos handled medication pretty badly… I just added a little bit of stress coat

 

[Captain holt]

Beautiful fish my favourite type of Oscar

It could be a bit from an other fish but it looks like heater burn to me - is there a way he could have been resting against it? I've had big cichlids that ocasionally rested on or around objects?

Wills

Thank you very much!
Hmmm possibly but I do have a heater guard on so I’m guessing maybe not… most likely my pleco had a taste

 

[Ichthys]

Elbows at dawn. Plecs are a bit territorial.