To me stable refers to their color and nothing else. If it stays colored up 24/7 then it's stable. If it varies during certain activities then it's not. Pretty simple. Personality has nothing to do with it. Fish's comfort has nothing to do with it. Fish eating has nothing to do with it. Tank mates have nothing to do with it. If it's stable, it's stable regardless of environmental factors. If your fish is not like that, then it's simple you DO NOT have a stable Dat. It may color up and stay bright most of the time, but if it's not ALL the time, then it's just not what should be considered a "stable" Dat. I do agree that point of collection in the wild has all to do with it. If you need to be vibrant 24/7 for hunting, mating, evading prey, and territorial staking, then you are going to be stable always. That's just my Dat loving opinion.