I have a juvi azureus alone in a 20g, but lately its been hiding in a u-shaped hide all day and night. Its very healthy and plump, so i know its been eating. Anyway, what could be wrong? All my temps are normal, and no changes have been made. My mantella died not long ago by unknown reasons, and i dont want this one to die.
Should i put it in a quarantine tank? Or is this normal behavior this time of year?
Thx.


