my corner tank

I Was trying to get a better pic of the siameses but my camera ran out of juice.

The siamese is definetly not as brightly coloured and elegant as he was a year a go. also has gone a bit scrawny.

does anyone know if this happens with age or is something wrong with him?
 
Well I thought it could be the type that grow massive but was unsure as there are apparently simular species that dont.

I already have a 65 gallon tank so if it does outgrow that im not sure I could go any bigger, perhaps will have to go to a public aquarium??
 
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