New Oscar; hole in head?

Hm.. that's an idea. So would you use regular human-grade multivitamins/ I have a whole bottle that I stopped taking because they tend to make me go through horrible digestive events. :)

Use liquid multivitamins. Soak the pellets for a couple minutes before feeding.

OK; liquid. :)
This new Oscar is a complete pig; always hungry, actually comes out of the water to eat out of your hand. Our other one has never done this. Yet he is not aggressive at all toward anything in the tank.