tom-
jeff is right, if you dont know what to feed these guys do you at least know how to keep them? what are you keeping them in currently? for a first sal these really arent the best choice -they arent too hard once youve got the basics down but the food is the main issue that makes these not good starters. you may not know this but these salamanders are lungless, so if not kept cool and damp enough they will die from lack of oxygen exchange. i have 3 and they are good eaters but keeping them in good food supply isnt easy, i have plenty of springtails but it takes more to feed them-small crickets are good food items, plus also you can offer live black worms on a plate. i am not guessing to far that you didnt buy these in a pet shop-so you probably collected them locally, you can get 'field plankton' from the same area they came from. if you pick up leaf litter and old wood from the area and shake them out you will get lots of insects-just choose ones that are small enough to eat.