Derasa clam coloration

[tigre44]

My clam was black and white I have had him about 3 yrs over the last several months he has lost nearly all of his color. Seems to be healthy otherwise wide open under mh lights and growing. Can this be corrected ?

 

[blaxsun]

Maybe post some images...?

 

[tigre44]

Hopefully this photo is good enough

 

[MrGisonni]

He is shaded by that monti cap. What about your nutrients?