Keep plenty of food available at all times, these guys like to eat at their leisure. Keep nitrates/nitrites and ammonia as low as possible, maintain pH in the slightly acidic range. Temps are good, they can go a little higher if you like (like the low 80's). Keep up on water changes and filter maintainence, as good water quality is a must (think of them more like fish than herps). The food species you mentioned work well, as well as bettas--I recommend starting a breeding colony to try and save some grit. As far as breeding, when they are ready, they will breed--although I've been experimenting with varuious environmental factors, such as increasing water depths, cranking up flow, increasing food, etc. to simulate the wet season. They are live-bearers, and will givwe birth to what I've experienced as an average of about 15-20 young, who will gladly feed on guppies. If you need anything else, just ask.