I'm not as against the fish themselves as I am the commercial nature of the whole thing. Raising the price of a $1 fish to $5, making those $30 2g glofish tanks, making it illegal to sell offspring, etc. etc. I think that while it may not be an issue now, they may be released into the wild more and more as people get fry and can't do anything with them. Convicts especially breed like rabbits, and zebra danios also breed very readily as well. Obviously nobody's going to have room for 100 convicts in their tank, and since you can't sell them, what do you do?