Please excuse the spelling typos, its a little late where I am. The animals are not impossible to feed, some feed very well, what I meant was some picky eaters are next to impossible to feed.
I also left out that these guys require UV lamps, which have to be replaced every 6 months, and need a visual barrier (such as plants) in sides of the tanks so that activity around their tank won't spook them too much (a big problem in the beginning). The plants will also provide them with some security which they will need to reduce stress. There are some simple plants you can use, I can tell those interested in some easy to find species and how to care for them in a tank.