Fish-Best and Worst

From Eating Well Newsletter. There are plenty of internet sites for more information and what brands to look for. I buy Costco farmed salmon and love it. Wild Alaskan Salmon is way too expensive. I checked on line and it seems they buy from reputable sources. Let's hope anyway.

Best

1. Albacore Tuna (troll- or pole-caught, from the U.S. or British Columbia)

Many tuna are high in mercury but albacore tuna—the kind of white tuna that’s commonly canned—gets a Super Green rating as long as (and this is the clincher) it is “troll- or pole-caught” in the U.S. or British Columbia. The reason: smaller (usually less than 20 pounds), younger fish are typically caught this way (as opposed to the larger fish caught on longlines). These fish have much lower mercury and contaminant ratings and those caught in colder northern waters often have higher omega-3 counts. The challenge: you need to do your homework to know how your fish was caught or look for the Marine Stewardship Council (MSC) blue eco label.

2. Mussels & Oysters (farmed)

Farmed mussels and oysters are good for you (a 3-oz. serving of mussels contains 700 mg of omega-3s and oysters pack 44 percent of the recommended daily values of iron). Better yet, they are actually good for the environment. Both feed off the natural nutrients and algae in the water, which improves water quality. They can also act as natural reefs, attracting and providing food for other fish. One health caveat: Raw shellfish, especially those from warm waters, may contain bacteria that can cause illnesses.

3. Pink Shrimp (wild-caught, Oregon) & Spot Prawns (wild-caught, British Columbia)

Most shrimp are plentiful and reproduce quickly. But whether they are sustainably farmed and harvested is the big question. In an effort to reduce the by-catch caused by netting and prevent ocean floors from being scraped clean by dragging, the U.S. has strict regulations on farming and trawling. The best choices are wild-caught MSC-certified pink shrimp (aka cocktail shrimp) from Oregon or their larger sisters, spot prawns, also from the Pacific Northwest, which are caught by traps. Avoid: imported shrimp, farmed or wild.

4. Rainbow Trout (farmed)

Though lake trout are high in contaminants, nearly all the trout you will find in the market is rainbow trout. In the U.S., rainbow trout are farmed primarily in freshwater ponds and “raceways” where they are more protected from contaminants and fed a fishmeal diet that has been fine-tuned to conserve resources.

5. Salmon (wild-caught, Alaska)

To give you an idea of how well managed Alaska’s salmon fishery is, consider this: biologists are posted at river mouths to count how many wild fish return to spawn. If the numbers begin to dwindle, the fishery is closed before it reaches its limits, as was done recently with some Chinook fisheries. This close monitoring, along with strict quotas and careful management of water quality, means Alaska’s wild-caught salmon are both healthier (they pack 950 mg of omega-3s and carry few contaminants) and more sustainable than just about any other salmon fishery.

6. Sardines, Pacific (wild-caught)

The tiny, inexpensive sardine is making it onto many lists of superfoods and for good reason. It packs more omega-3s (1,950 mg!) per 3-oz. serving than salmon, tuna or just about any other food; it’s also one of the very, very few foods that’s naturally high in vitamin D. Many fish in the herring family are commonly called sardines. Quick to reproduce, Pacific sardines have rebounded from both overfishing and a natural collapse in the 1940s.

AVOID
A number of environmental organizations have also advocated taking many fish off the menu. The large fish listed below are just six examples we chose to highlight: popular fish that are both depleted and, in many cases, carry higher levels of mercury and PCBs. The Environmental Defense Fund (EDF) has also posted health advisories on some of these fish at edf.org. An asterisk (*) indicates levels of contaminants so high EDF recommends not eating the fish at all.

1. Bluefin Tuna*

In December the World Wildlife Fund put the bluefin tuna on its “10 for 2010” list of threatened species, alongside the giant panda, tigers and leatherback turtles. Though environmental groups are advocating for protected status, the bluefin continues to command as much as $177,000 a fish. Bluefin have high levels of mercury and carry an EDF health alert.

2. Chilean Sea Bass (aka Patagonian Toothfish)

Slow-growing and prized for its buttery meat, Chilean sea bass has been fished to near depletion in its native cold Antarctic waters. The methods used to catch them—trawlers and longlines—have also damaged the ocean floor and hooked albatross and other seabirds. At present, there is one well-managed fishery that is MSC-certified.

3. Groupers

High mercury levels in these giant fish have caused EDF to issue a health advisory. Groupers can live to be 40 but only reproduce over a short amount of time, making them vulnerable to overfishing.

4. Monkfish

This strange fish resembles a catfish in that it has whiskers and is a bottom dweller, but its light, fresh taste made it a staple for gourmets. The fish is recovering some after being depleted but the trawlers that drag for it also threaten the habitat where it lives.

5. Orange Roughy

Like groupers, this fish lives a long life but is slow to reproduce, making it vulnerable to overfishing. As Seafood Watch puts it: “Orange roughy lives 100 years or more—so the fillet in your freezer might be from a fish older than your grandmother!” This also means it has high levels of mercury, causing EDF to issue a health advisory.

6. Salmon (farmed)

Most farmed salmon (and all salmon labeled “Atlantic salmon” is farmed) are raised in tightly packed, open-net pens often rife with parasites and diseases that threaten the wild salmon trying to swim by to their ancestral spawning waters. Farmed salmon are fed fishmeal, given antibiotics to combat diseases and have levels of PCBs high enough to rate a health advisory from EDF. Recently, some inland closed-system coho farms have earned a Best Choice status from Seafood Watch. There is hope consumer pressure will encourage more farms to adopt better practices.