i gave away 2 giant danios and 3 rainbow fish i used to start my retic tank. i easily had 20 responses from people wanting the fish. they ended up going to some guy starting a 180 planted tank.
I think all danios sold in my area are quite plain and boring. Yes they may be super active, but they dont live very long. The giant danios just look like a retarded regular danio with eyes the size of a golfball. Definately not my cup of tea when it comes to this fish.
I like them, tough little fish that are easy to breed. most species will breed in a 20g and are great for people trying to breed egg layers for the first time. If you do not want them check with your local schools or libraries to see if any maintain community tanks, I betthey would be happy to have them.