How long does it take for a cherry barb to reach full adult size?

I bought a cherry barb from Petco when it was on sale for a dollar. I've had the cherry barb for about 1.5 months and it still looks pretty small. How long does it take for it to reach its full adult size?

fish guy2007-02-21T15:51:23Z

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How small is it exactly? Cherry barbs only grow to 1.5 inches. Also you should know that cherry barbs are a shoaling fish, and need groups of at least 6. So it is very likely stressed from being the only one of its kind.

robrr032007-02-21T23:18:25Z

it never will, in a small tank. they only grow to the size of their enviroment.