Aquaponics fish species you choose for your system depends on several factors. Among the two largest are the legal considerations, and if the choice of FRY or fry.
When I say "legal considerations" is not some doom and gloom, either, but rather some Governments have put restrictions in place what kind of fish you can grow in a tank. It is best to consult your local pet store, University or the Department of Agriculture. They can give you a definitive answer to him exactly what aquaponics fish species you can grow and you can not.
The next big question you must answer is whether you want to grow up FRY or fry. FRY are precisely... fish which concern as long as your finger while the FRY are fish that have just hatched. One thing to mention is that you cannot stir fry and fry! Your fry will be eaten if you do. I prefer personally FRY because FRY to take a little longer to mature. If you do not plan on eating fish you grow you can go with fully grown fish as well.
Many types of fish aquaponics species that you can grow here is a brief overview of the top 3.
Trout - my own favourites personal. Trout extremely rapid growth compared to other species. Trout as colder temperatures (10 C-20 C) which means that you do not require connecting heater system, they will be able to take the cold (and heat).
Tilapia - probably the most used for aquaponics fish. The rapid growth and are very easy to reproduce. Above all, they are in poor conditions of the water (making it ideal for beginners in aquaponics). However, one of the few drawbacks of Tilapia is that they need water more hot that can put you off slightly. If you live in a colder climate, you need to keep a heating appliance in the tank to keep warm when cold.
Silver perch - a very versative Australian fish. They grow up healthy in many different conditions and are omnivores (you can feed the Greens). Trout or Tilapia, they take a little time to mature well.
I've covered only eat fish here, but if you do not rely on the fish you have in the tank, you can use virtually any fish you want. I have seen people as a reservoir of beautiful view which is just to help cultivate the installation of the tank.
The sky really is the limit with the type of fish, that you can grow (as long as there is no prohibition to do so). It is important that when you start using fish which are very tolerant to different conditions and that you are doing, you can begin to keep more difficult fish.
