Nets or Cages
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    Raceways
    Recirculating  Systems
    Shellfish Culture
 
 
 
Nets and  Cages


Overview:
Fish are raised in enclosures made different materials in offshore costal waters or in freshwater lakes. 

Most Prevalent Species Raised:
Salmon, Tuna

Concerns:
-Waste, including feces and uneaten food pellets, from these densely populated pens can pollute the surrounding environment.
-Farmed fish can escape from their enclosures and compete with local wild fish for natural resources, modifying the local ecosystem.
-Escaped fish can interbreed with populations of wild fish thus decreasing the hardiness of the wild gene pool.
-Diseases and Parasites that are common in highly populated farms can spread to wild fish