Interesting - do you study fish professionally?
What do you mean when you say 'toxins' please?
And can you define 'VERY HIGH' - on what scale? Measured by who? Is there an ACCEPTABLE level of 'toxins'..?
Thanks in advance...
No not professionally. But I eat a lot of fish and there are risks associated with eating fish. Toxins are “poisons” and they can be a bit of everything but notably mercury and PCBs and sewage and industrial chemicals. Haven’t you seen people fishing in certain waters and said to yourself, “I certainly would not eat that fish.” There are lots of online resources as well as various government entities issue reports, but there is built in pressure to sugar coat some aspects of this because of the commercial implications. Not to be exhaustive but here are some examples:
Quite toxic (often the larger, long living fish that are wild caught)
Swordfish
Orange roughy
Lots of kinds of tuna
Turbot (Atlantic halibut)
Grouper
Halibut
Mahi mahi
Tilefish
Bluefish
Sea bass
Farmed salmon (always eat wild salmon)
Farmed shrimp from Asia, for example
Carp
Lake trout
In between (pretty good)
Cod
Pollack
Whiting
Haddock
Ocean perch
Good (often smaller fish)
Farmed muscles
Farmed oysters (usually)
Scallops
US tilapia
US farmed rainbow trout
US farmed catfish
Sardines
Herring
Smaller mackerel (usually, but not always)
Arctic char
Wild salmon
Fish are very local to various parts of the world. The above tends to be a US perspective.
No, I don’t know actual “acceptable” levels of toxins but often a government entity will say a pregnant woman should not eat ANY of the fish on the bad list and regular people should only eat the bad ones once or twice a month. But that can get tricky because you might eat swordfish twice a month and forget and eat orange roughy twice that same month. I tend to think the warnings are probably overly alarmist so I just have the bad ones (some of which I love) as a special treat and then eat others that I love like scallops or Arctic char or haddock or herring or muscles all the time.