I have two Lutino Ruby Oscars that appear to be sick. THey hardly move, eat very little, and haven't grown since the day I got them. Which was about two months ago. I bought these two along with a Tiger Oscar and the Tiger has grown at least 3".
I have fed them Hikari pellets and Krill from day one, no feeders. No new fish introduced to the tank either.
Their stomachs are pretty much flat and their poop is white and stringy.
Is there any way to tell what their problem may be? With nearly endless possibilities at the pet stores for possible cures I am a very confused.
I change 50% of the water every other day, todays readings are:
Ammonia-0
Nitrate-20 (tommorrows water change day)
Nitrite-0
Attached is a picture, thats one of them lying in the background.

I have fed them Hikari pellets and Krill from day one, no feeders. No new fish introduced to the tank either.
Their stomachs are pretty much flat and their poop is white and stringy.
Is there any way to tell what their problem may be? With nearly endless possibilities at the pet stores for possible cures I am a very confused.
I change 50% of the water every other day, todays readings are:
Ammonia-0
Nitrate-20 (tommorrows water change day)
Nitrite-0
Attached is a picture, thats one of them lying in the background.

