Thanks guys. Maybe it wasn't as stupid a question as I thought.
And for those who might seem a little confused, I'm looking to put fish in a pond and also hopefully attract frogs. Now although the chances of me attracting frogs AND have them breed is unlikely, I don't want any fish to eat the eggs/tadpoles if they do.
The reason I want them to eat mossie larvae is that any water lying around here takes no time at all to be covered in mossies and larvae.
Its frustrating - we already have water lying around, in a bird bath (never even seen a bird in it!) and in our old council garden bin, with a stuffed lid, which is full of water. We get mossie larvae, so at the moment there is a goldfish in it, which keeps it under control. But of course, no frogs other than the odd marsh frog now and again. They are around, this summer there have been frogs going off of a night one street parallel to ours, but none have come to our place.
I was at a clients place about 5 more streets away after rain, walk into their back room, hear frogs outside. 'Oh you keep frogs'. 'No, they keep us, they are wild frogs'. She has no more water around than us, and lives no closer to any natural water, so I don't get it. People who don't necessarily want them get them, we want them and don't. GRRRR!