looking for advice on using fish for larvae control

looking for advice on using fish for larvae control

This year I hope to put gold fish in my water barrel in my garden, I won't be dipping from it unless we get our usual drought, but when it's used it'll have fishy-poo water in it, good for my garden, and I hope to keep the mosquitoes killed off rather than have the screening over the barrel. Will theyt be enough to kill off the mosquito larvae? Any thoughts? TIA
Some color on my tomatoes – FINALLY!

Some color on my tomatoes – FINALLY!

My place

My place

The cactus that would (NOT) be dinner..and peas!

The cactus that would (NOT) be dinner..and peas!

Flowering Cherries

Flowering Cherries

my apartment

my apartment

Valencia Orange pest

Valencia Orange pest