Quick Question on vitamins

One to two times a week I'll give Moreno a goldfish or rosy. I don't always dust the insects I give him. I will do that two to three times a week and I use the rep-cal herpitivite and the D3 from rep-cal. Do I need to do every feeding with vitamins? I thought the fish would give more nutrition since he's getting the bones and organs. I feed him a combination of silks, supers, butters, goliath hornworms, waxies and then the fish. I do plan on pinkies when he's a little bigger. He's about 2-2.5 inches now. thanks for the info.

2-3 times a week is fine for most amphibians. Is this a pixie you are talking about?

sorry forgot to say what kind he was. He is a pacman frog. Growing fast too. I'll get pics up when I can figure out our new camera.