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John C Daley wrote:I have grown trout from fingerlings.
I use a farm dam 80ft x 40 ft and about 10ft deep.
It has water moving into from time to time.
It has vegetation around that can drop in or harbour insects etc.
I actually cannot remember what the trout feed on, but I never feed them.
Surface area, depth vegetation are all issues to look at now.
Good luck.
If the right habitat was in place, the surface area took over to grow periphyton naturally from phosphorus and nitrogen in the water column. Bugs is the most important part to start!
Take a look at some ideas here at this artificial fish cover site called Fishiding.com
Shallow water fry protection
fry habitat