Scrape or Something Else?

[Wandering Albatross]

I noticed this when I fed the tank this morning, it looks in person like a surface wound, but from what I have no idea. Of all the fish in my tank, these guys have never been bothered by anyone. Both fish in this pair are active and eating well, no abnormal behavior. She’s actively hydrating eggs again as she often does. Maybe she scraped the rocks darting into their cave?

 

[MnFish1]

The water spots on the glass make it a little difficult. But obviously a fish like that is difficult to photograph. In all likelihood if nothing new was put in the tank, and it literally happened overnight, whatever you're seeing is an injury/scrape. Watch for worsening. If worse consider separating into another tank and treating with kanaplex

 

[Jay Hemdal Verified Community Expert]

I noticed this when I fed the tank this morning, it looks in person like a surface wound, but from what I have no idea. Of all the fish in my tank, these guys have never been bothered by anyone. Both fish in this pair are active and eating well, no abnormal behavior. She’s actively hydrating eggs again as she often does. Maybe she scraped the rocks darting into their cave?

That looks like something cut its skin in a semicircle - no idea what could have done this. They are freakish jumpers - maybe it hit something above the water’s surface?

 

[Wandering Albatross]

That looks like something cut its skin in a semicircle - no idea what could have done this. They are freakish jumpers - maybe it hit something above the water’s surface?

Looks a little like chipping paint to me, surface scratching of some kind. Maybe she jumped against the mesh lid, though I've never seen either attempt to jump. They tend to hover just above their burrow and dart in whenever I breathe in their direction if I'm not bringing food. Doesn't quite look like a bite, and it's not fuzzy. She seems normal otherwise, it's just really obvious something happened overnight.