I have both bettas and goldfish- I give veggies to both of them! You sure can give them veggies, depending on the type of fish. I'm not positive about the fish you have, as I don't have any of these varieties, though. Maybe someone else will have better info there? Frozen peas that have been thawed over night are GREAT, and help keep the fish from getting/ will help cure swim bladder disorders. Pop them out of the skins and crush them between your fingers into tiny pieces in a little water before you feed them. I have also fed peeled carrots that are cooked til mushy and then crushed, broccoli cooked until soft & then the little flower bits cut off into tiny pieces, Spinach that has been blanched/wilted & torn into tiny pieces. I've also peeled an orange, split the segments, and taken out the little pieces inside & fed them. My goldfish even picked apart some very thin slices of fresh cucumber that I put in their tank as a treat for the snails & ate them- I didn't think they would be able to, but they did. When I put fruits & veggies in my tanks it's like a feeding frenzy. They LOVE it. Just don't do cauliflower... I tried that once, and it made my whole house stink in about 2 hours- it was pretty awful. Give it a try with a very, very small amount of something like a skinned pea & see what happens! I don't know if the angels will eat very much of the veggies, but, the gouramis probably will- my bettas do!