Pajama Cardinal - Sudden Color Loss and Fin Issue (1 Viewer)

[CKramer]

Howdy! So we have two pajama cardinals and tonight at feeding noticed that one has lost a lot of his color and he isn’t using his left fin very much. The fin he isn’t using is usually clear, but now it looks to have some white on it.

He did eat a little and swimming around. All others in the tank are fine.

Nothing has been introduced to the tank and they eat frozen food.

Any ideas? TIA!

Photos attached

 

[Humblefish]

Is the fish breathing fast or scratching? So many different things can cause paleness in fish.

 

[CKramer]

Is the fish breathing fast or scratching? So many different things can cause paleness in fish.

No, I don’t think he’s breathing hard or scratching. Oddly enough though, he, the pale one, is nipping at the healthy PJ. Very strange behavior for them.

 

[Humblefish]

No, I don’t think he’s breathing hard or scratching. Oddly enough though, he, the pale one, is nipping at the healthy PJ. Very strange behavior for them.

I wonder if it’s some sort of mating behavior.