What are the signs of an older betta?

[aqua001]

So, what are the signs of an older betta?

[finnfinnfriend]

Usually they will be bigger than the younger ones, they will have longer fins(if they are not a plakat anyway) sometimes if they are really old they might have a scale or two missing or a scar... But younger ones could have that too...

[magnum]

Sometimes darkening of colour, such as turning to black more around the body and head, possibly lethargy and a more placid betta.