what is the most domenate fish in a fresh water pond?

Answer 1

Are you asking in terms of which fish do most people keep, or which fish is the most dominant in the pond?

As far as which do most people keep, in larger ponds probably koi, but if the pond is too small for koi, then goldfish.

For which is the most dominant in a pond, neither koi or goldfish are usually that aggressive. Some species like green sunfish, bass, and some of the larger catfish would be more likely to be dominant, depending on what else was in the pond.

Answer 2

depends on what's in the pond. most people keep koi and they can get 3' long and most other fish won't mess with them.