Originally Posted by wingstone
didn't mean to start arguments here,,,just really need to know how doable this is before i turn him loose,,,,,,more of a hobby for him than a money maker.....not sure how much of a problem heating the water would be, he seems to be interested in tilapia, might be cause that's usually what I buy....I keep my ferment right inside the barn door and it does not freeze,,,only after putting it out for the birds does the problem start....so it might be doable to keep water temp inside the barn...
trout sound interesting only because the water temp could be lower,,,,but the only time I ate trout, I picked little bones out of it and it really was not that good,,,in defense of the trout, my sister in law cooked it and she ruins boiled water...
In captivity, trout require very clean water, and cold too, which you won't have a problem with now, but in summer . . .
Tilapia are the "miracle fish" of the tropics, where they provide cheap protein. They can tolerate a lot of pollution and high temperatures. They are great for ponds in Africa for that reason. Fish are cold blooded and when the water temps drop, so does their metabolism. Unlike birds and mammals, they have a much narrower temp range to perform well. Tilapia can survive some cool water (probably species dependent, but 60 F is probably close to the lower limit), but they need 70's or 80's to thrive (meaning breed and grow at their "advertised" rate).
There are some species that are efficient producers at a wide range of temperatures, but they are not very desirable as food fish. Examples are carp (goldfish and koi included here), bass, sunfish, and channel catfish. None of these are desirable for indoor aquaculture as food fish, but if you like the taste of these, they could be raised in large tanks. Outdoor tanks, with plastic over them in the winter to act as a greenhouse, would work the best. In-ground ponds are even better because the temps are more consistent.