Who's the New Fish?

It's Pocky!

Recently one of my lionhead goldfish starting going through a dramatic change which happened in under 2 weeks (mostly within a week).

Before and After

My fastest growing lionhead 'Pocky' has rapidly lost his orange coloring. Overall Pocky's behavior has not changed and none of the other lionheads have yet to show any dramatic color changes. I can not pin-point the exact cause of Pocky's change although it could be due to... a lack of light (so I started leaving the light on at night where-as before I didn't really use it), low acidic pH (I have fairly high pH at 7.4+ which makes my water alkaline), food (I had started mixing in OmegaOne pellets last month which could be a possible cause), disease (so I treated the tank as a preventative), or age (I have had these lionhead for under 3 months now).

Before and After (mid transformation)

Whatever the case may be.. at least it is easier to distinguish Pocky from Sumo currently as it's almost like I have an entirely new fish. The little bit of orange that is currently left on Pocky is still rapidly disappearing so, we shall see what happens with Pocky over the next few weeks but I honestly feel this may only be age or gene related (which may perhaps mean that one of Pocky's parents was of the lemonhead variety, and if that's the case I believe Sumo is its sibling so I would perhaps anticipate Sumo changing colors as well).