In the wild they eat plant material, small bugs and pond creatures, and even each other if food is scarce.
If you are raising triops at home you can basically feed them anything organic. Chopped up vegetables and other kitchen scraps are good choices, or you can simply feed them a commercial fish food, like Betta fish food or shrimp pellets. You can also throw in dead bugs, Spiders, etc and see if they will eat it. Or as the previous poster mentioned, you can even feed them grass.
If you need suggestions or specifics here is a link to a very good triops feeding guide, including how much to feed triops, when to feed triops, etc.
http://www.triopsguys.com/triops-feeding-guide-78/
possibly daphnia, baby triops or fairy shrimp. If you have just hatched your triops it is more likely to be fairy shrimp, but if they are over a week old they should have eaten all of the fairy shrimp, daphnia can become a problem when triops are well fed and dont eat them, but they wont hurt the triops
NO They do not
yes
Your poopy
Triops Longicaudatus, or the tadpole shrimp are omnivorous. They will eat insects, small fish, tadpoles and anything that is smaller than they are, including other tadpole shrimp.
yes they geat ghost shrimp and brine shrimp
Yes they can.
Baby brine are really too small for a mandarin, you will need to raise the brine shrimp up to a larger size.
They can eat bloodworms, brine shrimp, etc.
they mostly eat brine shrimp but on occasions the will eat meat flakes
Yes, but they eat microschopic bits of bread
clown fish will eat blood worms, mysis shrimp, brine shrimp, flake food, and pellets.