Gill colour change?

[Hamamelis]

I just moved my bigger axy, who I've had from newly hatched, into a full size tank yesterday evening, and this morning her gills (which have always been fairly bright red) are a much darker brown.

She's been moved from an unfiltered tank with just rocks to one with plants and a filter in, and she's exploring the tank looking pretty happy, and eating fine. Is this something to worry about, or is it likely to just be a result of higher oxygen levels?

Just worried when my baby does something unexpected...

 

[Kaysie]

It's probably nothing to worry about. She just has more blood flow because of the increased activity.

 

[Hamamelis]

Thanks

She's not looking stressed otherwise, so I didn't think it was something too serious, but I thought it was worth checking!