I hope its a colour change

[DepotFish]

Depot is starting to get black lines on the edges of her fins and black spots on her gill coverings since she moved to her new tank. I'm hoping its not some sort of fungus. She's had colour changes where she had black spots before but not on her gills. I did a 100% water change today. I don't know if I should get something for the tank or wait it out a bit and see what happens.

 

[Devilishturtles]

What kind of fish is this?

 

[DepotFish]

Common goldfish

 

[Devilishturtles]

Completely normal.

Goldfish are born brown, and go can go through many color changes until they reach adulthood.

 

[DepotFish]

Thanks I hope that right. I just worry because I've never seen blacks spots on her gills, only her head and fins. On another note, she's developing lots of muscle being in a bigger tank, and my chubby little betta girls are thinning out with the exercise they are getting in their bigger tank.