Fish play a vital role in an aquaponics system for the production of vegetables. The survival of the system depends upon good, healthy fish and plants. Fish waste contains nitrate which is mixed in water then separates these nutrients for plants. If fish don't excrete these nutrients, the plants in the system cannot survive.
Species of fish are usually decided on the basis of the climate of a particular area where you want to establish an aquaponics system. You can produce healthy fish only in symbiotic environment by combining the hydroponics system with aquaculture system. In cold temperature area, only a few kinds of fish can survive, so, every territory had their own rules according to the climate there.
Types of fish for an aquaponics system
Of course, you can use any kind of fish you want in aquaponics. But if you plan to sell the fish as well, then you'll need to use some of the following. They are marketable and in high demand in most places.
These types of fishes have good commercial value:
Tilapia:
A good tasting fish that is gaining popularity these days. It's commonly sold in fish markets, so you know you'll have a market for it when it's ready. Tilapia is a clean fish that easily adapts to any size of a tank. They are extremely tough and will eat almost anything. You can harvest them within 4 to 6 months, depending on their size. They are very easy to be grown anywhere.
Murray Cod:
Murray Cod grows fast, but they also have a big appetite. You have to feed them all the time or their hunger will cause them to devour each other. The Murray Cod is for those aquaponics lovers who have time for maintenance. They require a bit more attention than other species.
Catfish:
A great fish because they adapt fairly quickly and grow very fast. There's also a market for them in most cities. They can grow in almost any type of environment, even polluted city ponds. However, they do grow best in clean water with constant supply of food. It also make them taste better.
These are three of the best fish species to use if you want to market them as well as the produce (vegetables, fruits, etc.) you grow. You can also raise fish for aquariums such as koi, goldfish, or white bass and any other fish that has market value if that is what you prefer.
You can find out more detailed species in my web site through the link in my bio box below.
Jonathan Dylan is an aquaponics expert. For more tips about species of fish in aquaponics visit http://www.AquaponicsCulture.com
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