Lately my oscar has been lazing around on the bottom of the aquarium or hovering around the top... he still eats, but he isn't as active as he used to be... is this normal or could there be an underlying problem? Everyone else in the tank behaves normal and all water parameters are good... 0 ammonia and nitrite and 15 ppm nitrate... just did a water change and still no change in behavior....
Any ideas would be appreciated.
Any ideas would be appreciated.