What's truly frightening is that I have seen worse information on the internet regarding tropical fish than this. In part, I blame Google translate. My theory is that fish breeders in China--or elsewhere, but not English speakers--are churning out fish profiles that are generic at best, using translation software to get an English version, and posting on sites that mimic a reputable site. Soon the unsuspecting members of the public who picked up a ten-gallon tank on sale at Petco are rushing to buy oscars because they are so cute and peaceful.
Usually when people talk about a slippery slope it is a fallacy where dire results are predicted from relatively mild "causes." I am afraid, however, that it is not a slippery slope to say that these articles will flood the internet to the point that credible articles are difficult to find and the uninitiated public will accept the schlock as truth. I hope I'm wrong.
Thanks for sharing the "fun" article. It's nice to know that a relative beginner can keep discus in a thirty-gallon tank.