Can you please tell me why my fish disdus change to dark color and it does not eat about a week. It doen’t seem sick, acted normal. I keep it with 3 other discus those are eat a lot. Is it okay to keep a baby silver arowana together with discus fishes?
Reply:
The fish changes dark in color mean she is not feeling well. She will be sick later on. Put her in a hospital tank. Treat her with Acriflavine solution plus salt. Change water and repeat the treatment for a few days. It will not be okay to keep Arowana together with discus fish.

Comments (2)
Is the Acriflavine solution selling from pharmacy type or from the pet shop?
Acriflavine solution selling from pharmacy is for human.
Not for discus fish. It is not pure Acriflavine. If cannot get pure Acriflavine, use those sold in pet shops.