ReptoTreat Delica Bloodworms for Turtles Frogs | Tetra Aquarium
If you haven't tried this product I highly recommend it as a supplement. It's much less messy than frozen bloodworms as the fish eat the gel, too. Even my Dario hysginon and Scarlet Badis will eat it and they're normally live food-only.
My 20 long (densely, densely planted) has a male Betta, Neons, Ember Tetras, the Dario, Pygmy and hasbrosus Cories, Fire Red Shrimp and Assassin and Nerite Snails. Only the Nerites ignore me when I feed ReptoTreat.
I love that it's a gel and comes in eight 48 gram packs so there's no mixing as with other gel food. An open pack keeps 72 hours in the refridgerator. Unopened packs can be stored at room temperature. Might be wasteful if you only have one Betta as I wouldn't recommend it as a staple diet.