That was my point... that is a fish that people often see in a store, not realizing that they are tiny fry.
I saw one link that talked about tin foil barbs growing to 14"..... I wasn't sure if there were two species that were commonly called "tin foil barb" ... but they clearly don't belong in most aquariums... that's 84" for the 6 barbs he has...
Heck, I've got a goldfish out in my pond my daughter bought October 2008.... tiny "feeder" goldfish... he ate snails in her tank, and is now in my pond at probably 8" ..... they grow so quickly! (He grew to about 5" in just a few months, before it warmed up enough to put him outside.)