My current stocking plan is a Dwarf Gourami, Guppies, Black Phantom or Lemon Tetras, Sterba's Cories & Malaysian Trumpet Snails. Do they/will they all eat the same thing? What is better, pellets or flakes? Or is it just a fish preference? What is the best foods in addition to pellets & flakes for these fish? I'm planning on getting New Life Spectrum as my main brand of flakes or pellets.