Home made fish foods

Hi all,

Does anyone have some hints on home made fish foods or a link to same?

I live 2 1/2 hours drive from the neares petshop that sells marine stuff
and it's becoming a drag plus I only have 5 fish and don't get through a
great deal of food but want it to remain fresher (even the frozen
stuff). I also want to give them a more varied diet and less flake food.
My pyjama cardinals will only eat the frozen brine shrimp so I'd really
like to find them more variety.

There is a van I've seen visit here once a week that sells seafoods. Not
sure what as I'm not a seafood fan but I assume there would be prawns,
fish, lobsters and stuff. What should I be looking for? Can I make up a
mix of some things and freeze it myself or could that be unsafe?

Thanks for any advice.
miskairal