Remains of antibiotics were even found in fish marked “free of antibiotics” and wild shrimps, probably as a result of the exodus of neighbouring farmers. Avoiding fish farming should not be a burden – read our advice on buying wild fish at low prices. High levels of PCBs in farmed fish are a serious problem, but fish farmers seem to have found a solution: they replace fishmeal used in traditional fishmeal, grain and soybean feeds. The use of antibiotics in farmed fish is not only an environmental problem, but also a health problem. Fish can be grown on coastal fish farms, thinking of swimming pools full of fish, or in high seas fences off the coast. While wild fish is used to feed people, farmed fish are pellets for fish. The farmed fish contains more but less omega-3 fatty acids, is contaminated with PCBs, antibiotics and other contaminants, and fish farming has serious environmental consequences. Second what will you notice? Raised fish is almost always cheaper than wild fish. Although you have heard that wild and farmed fish contain the same amount of omega-3, simply because farmed fish usually contain much more fat. Speaking of wild fish, is it probably Pacific salmon or Atlastis okay? There is a lot of talk about the pollution of the Atlantic, which also affects the fish. Wild fish, as the name suggests, is wild! Some shellfish, such as crabs and tuna, are almost exclusively wild.