Juan Cris Casanova
I believe Juan is co-owner of Vanishing Jewels. I think that article is more about how to build a dart tank, and one that is mainly used for show. I could be wrong, since I read it when it came out... so I don't remember the details since I have read a bunch of other stuff inbetween then and now
. We have to remember that there a lot of people who keep a couple mixed darts in one tank, and have no intention of breeding them. They don't pull eggs, raise tads, or even have laying sites... they just want them cause they look pretty (nothing wrong with this). So if you got a couple different tinc morphs, or an azureus and didn't breed them, then whats the problem (if the tank is big enough, and they get along)? I think mixing is ok if you have experience with the species you are going to mix. They can live together in a nice show tank, but need to be watched carefully for fighting and can't be allowed to breed.
I could write more about mixing, but thats for a whole other topic... but we have to remember that not everyone keeping darts plans to breed, and could just want them for the same reason that everyone was attrached to them... they are beautiful animals.