albino oscar help

[125]

I have a albino tigar ascar about 6 in i have only had him for 4 weeks when i gat him he had perfect color but now he is turning black????
water is perfect doing my water changes. he is eating good and acts normal
he has a tank mate (jd) that will not leave him alone is this from stress or something else and how do i fix him
thanks in advance MFK

 

[purplecandle]

I would like more information~
What are your whater parmeters? Ammonia, Nitrate, Nitrite
Tank size?
All of the tankmates?
What do you feed him? List brands as well as type of food
What is your tank like, heavily decorated? Planted?
How often do you do water changes?