Mine is a little older I think,(based on the spread of the bars) and I also think it is a awsome tang. It will change colors it seems depending on what it is doing. When it goes to a cleaning station, whether gobie or shrimp, mine turns a beautiful chocolate brown. It then turns white. The yellow color along with some darkening around the edges comes when its terrorizing my Pakistani Butterflies. Luckily having a few confuses the tang and he forgets which one he's chasing

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Unfortunantly I probaly won't be able to keep this tang due to its aggressiveness and that bigger tank got put back a little further into the future(tranny bill=$$$).
