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Curious about the “Fish” you buy at the grocery store/restaurant

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Curious about the “Fish” you buy at the grocery store/restaurant

Old 04-09-2019, 02:58 AM
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Default Curious about the “Fish” you buy at the grocery store/restaurant

I came across this on twitter and thought it would be a good share:

It was posted by Dr. Jen M @AwesomebioTA

“So on Friday my Molecular Bio students did a lab about fish fraud. Their Super Important Homework Assignment (TM) was to go out for sushi and take a small sample home in a ziploc bag (EAT THE REST. Wasting food is uncool). Label the supposed fish, put it in the freezer.

Josue sequenced some red snapper. I put money on that being tilapia and...I was right. Someone owes me $5.

His lab partner, Juanni, sequenced Atlantic Salmon. Comes back as Rainbow trout. Unsurprising. Not the same species AT ALL, but unsurprising.

David and Nicolas both sequenced what they thought was Steelhead trout (aka Rainbow trout). David's was smoked, Nic's not.

Nic's was rainbow trout.

David's was coho salmon.

Reena sequenced what was labelled (on the box I bought at the grocery store, no less) Icelandic Cod (MSC-certified).

It was. Thank God.

Sydney sequenced what was labelled (again, ON THE BOX purchased at the grocery store) Pacific Cod.

It was Atlantic Cod.

Jade sequenced what the sushi restaurant (who shall remain nameless...it's probably not their fault) called red tuna.

IT WAS TILAPIA!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!

Moe sequenced one of the two samples (from different restaurants) labelled "white tuna". Often another name for albacore tuna.

It was yellowfin tuna. (NOT the same species!! A trade upwards)

Evalyne sequenced the other sample of "white tuna". That was the one that I brought in, that I theoretically would have eaten if I actually liked and ate "white tuna" (I think it's gross).

It was escolar.

THIS IS DANGEROUS. Can cause extreme gastrointestinal distress.

Last but not least of successful sample runs, we had one that makes my skin crawl. It was a sequence that came back with a bunch of "unknown bases" (a bit of cleaning up will help immensely) but I worked with what I had and ran it through the database. Was *supposed* to be Salmon

This salmon was not from a restaurant, but was instead purchased from the seafood department of a local grocery store. Again, to remain nameless. This was purchased from a counter, someone reaches in and grabs the fish, puts it in a bag, sticks a sticker on it, pay by the pound.

Of a gene approximately 650 base pairs long, I was hoping to get a workable sequence of at least 500 base pairs. This one only had 200 clean pairs before I go through the file to improve the sequence generated. So short compared to expected of "working material".

Ready?

Body louse.

I think I might vomit in my mouth a little.

I hope this is a mistake. HOPE TO ANY GOD FROM ANY RELIGION that this is a mistake.

I hope that this somehow becomes a fish sequence when I clean it up a bit. BUT BODY LOUSE.

This wasn't a piece of garbage from a market. This was from a "salmon fillet" that someone paid good money for, cut some off before they cooked it, put it in saran wrap & brought it in.

BODY LOUSE.

Think about how much there must be in that sample to override fish DNA!

Anyway, I don't know if any of my students are nearly as enthralled as I am about the results of this experiment. I'M THRILLED.

16 students, 13 decent bands on the gel.

Of those, we had 9 with pretty decent sequences. THAT'S NOT BAD.

Of those 9, TWO WERE LABELLED CORRECTLY.

So if you "are what you eat" and you like seafood? You have no idea what you are because nothing is labelled properly. If you want to know what you're eating? Make sure it's from a certified sustainable fishery. They know what they're fishing, and know what they're doing.”














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Old 04-09-2019, 03:12 AM
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I’m in Florida. Occasionally, one of the TV stations in conjunction with a university research lab tests seafood. The results are similar to yours. Very few are actually what they claim to be. I will never order fish at a restaurant.

between tilapia, basa , and nonexistent “Chilean sea bass”, I give up. Even if I am confident of a fish markets product, the handling of the fish before it’s in my possession concerns me as well.

taco Bell is as much risk as I am willing to take
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Old 04-09-2019, 06:29 AM
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I also stay away from seafood at restaurants. Only exceptions are local places on the coast where they know most customers know whats what. Will never by from a grocery store.
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Old 04-09-2019, 07:14 AM
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Originally Posted by Still Stoked View Post
taco Bell is as much risk as I am willing to take
You must be a VERY brave man.... That place gave me the colon cleansing of a lifetime every time I went. Quit eating there years ago.

Yeah, the only fish I'm eating is the one I caught unless I can verify the source. It's the one thing I'll spend good money for just to have the peace of mind that it is what it is. I wish I lived closer to the coast where I could buy it fresh from the boat, but alas.... not so much so in Western NC. Earthfare is about as good as it's going to get.
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Old 04-09-2019, 07:48 AM
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Cant beat fresh caught fish here in eastern NC. Either catch my own or will often buy shrimp from the local dealers. I never freeze fish for more than a couple of weeks but shrimp will hold up pretty good in a freezer if in a vacumn (sp) bag or frozen in a container full of water.
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Old 04-09-2019, 08:01 AM
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Originally Posted by gillnetflounderman View Post
Cant beat fresh caught fish here in eastern NC.
this is 99% how I eat my fish -- managed to package 100 servings from 5 gallons of blackfin tuna from this past Sunday


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Old 04-09-2019, 08:34 AM
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Originally Posted by gillnetflounderman View Post
Cant beat fresh caught fish here in eastern NC. Either catch my own or will often buy shrimp from the local dealers. I never freeze fish for more than a couple of weeks but shrimp will hold up pretty good in a freezer if in a vacumn (sp) bag or frozen in a container full of water.
I am not naming names... but I bought some "fresh local shrimp" in Carteret County last year. Went around the back of the stand to look for some ice and there were empty boxes from the shrimp... Ecuadorian White Shrimp being sold as fresh local

I used to work for a dragger up in NY, the premise was he would fish all night then come into the dock and sell retail to anyone that walked up. However, he would have a truck at the Fulton Fish Market at 2 AM selling whatever he caught and then buying a bunch of stuff that got loaded onto the boat and between 5 and 7 am each day he would pull into the slip with the "catch of the day"

I am starting to think there are no honest seafood retailers left, restaurants and grocery stores being the worst offenders.

Here in the far too West of the coast land, the quality of seafood being sold is frightening. The mislabeling is rampant... I have thought about writing a book buy how many times can you write about sushi places:
There is no such thing as white tuna.. it is escolar
That is not red snapper.. it is tilapia

Or about the grocery store seafood counters (Harris Teeter is by far the worst):
No, fish is not supposed to be dried out and colorless like that
No, the clams are not supposed to be open
No, the shrimp are not supposed to have black spots and black tails









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Old 04-09-2019, 09:41 AM
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I will not buy local fresh shrimp unless they look like this or darn close to it
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Old 04-09-2019, 09:46 AM
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Y'all are killing me out here in WNC!!!
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Old 04-09-2019, 10:24 AM
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Originally Posted by Squid Row View Post
I am not naming names... but I bought some "fresh local shrimp" in Carteret County last year. Went around the back of the stand to look for some ice and there were empty boxes from the shrimp... Ecuadorian White Shrimp being sold as fresh local

I used to work for a dragger up in NY, the premise was he would fish all night then come into the dock and sell retail to anyone that walked up. However, he would have a truck at the Fulton Fish Market at 2 AM selling whatever he caught and then buying a bunch of stuff that got loaded onto the boat and between 5 and 7 am each day he would pull into the slip with the "catch of the day"

I am starting to think there are no honest seafood retailers left, restaurants and grocery stores being the worst offenders.

Here in the far too West of the coast land, the quality of seafood being sold is frightening. The mislabeling is rampant... I have thought about writing a book buy how many times can you write about sushi places:
There is no such thing as white tuna.. it is escolar
That is not red snapper.. it is tilapia

Or about the grocery store seafood counters (Harris Teeter is by far the worst):
No, fish is not supposed to be dried out and colorless like that
No, the clams are not supposed to be open
No, the shrimp are not supposed to have black spots and black tails

I would guess the three Harris Teeter samples were farm raised. Natural health sources Always say NO farm raised fish period, even in restaurants too.

And to think many on here thought I was crazy to say McDonald's meat was gross.

McDonald's MAY be good compared to some fish for sale, even labeled as farm raised, and labeled as Tilapia.

Several people have told me they LOVE Tilapia. I think they love the price(not really cheap though), and they never cook their fish any way but FRIED, which covers a lot of crap with the breading. And since they don't fish, they have no clue what fresh fish tastes like.


Very sad indeed, what our govt. allows to be sold as pure or fresh or grade A or even organic when it is not organic.

For you people who say leave the govt out of your life, they are our ONLY legal watchdogs with authority.

I monitor several wwatchdog non profit organizations, but they have no authority, so falls on deaf ears legally.

Yes, I am extreme on the subject of healthy food, you better be also if you plan to see retirement or see your family grown if you are under 40 years of age here, maybe even under 55!!!!
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Old 04-09-2019, 11:55 AM
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To the OP,
If names are not named then there is no teeth.....just generalized complaints..
Most of us who have caught and seen fresh fish / shrimp / etc can sometimes spot the difference. But, unless action is taken then we are just wasting our breath.
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Old 04-09-2019, 01:12 PM
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"Excuse me, what fish is in the Fish Tacos"

"Tilapia"

"I'll have chicken"
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Old 04-09-2019, 01:24 PM
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Originally Posted by olyveoil View Post
To the OP,
If names are not named then there is no teeth.....just generalized complaints..
Most of us who have caught and seen fresh fish / shrimp / etc can sometimes spot the difference. But, unless action is taken then we are just wasting our breath.
I don't really care that names weren't identified. As rampant as this issue is, naming them would only let the mob get out there with their pitchforks and ruin a few business without having any impact on the problem.

Key word there is "sometimes". I have caught my share of fish and I eat sushi about once a week. Still, I am sure I have been fed something that is not what I ordered.

The biggest shocker for me is the "red tuna" actually being Tilapia. If it was in a spicy tuna roll, how would you know the difference?



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Old 04-09-2019, 04:29 PM
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Originally Posted by patrick81 View Post
I don't really care that names weren't identified. As rampant as this issue is, naming them would only let the mob get out there with their pitchforks and ruin a few business without having any impact on the problem.

Key word there is "sometimes". I have caught my share of fish and I eat sushi about once a week. Still, I am sure I have been fed something that is not what I ordered.

The biggest shocker for me is the "red tuna" actually being Tilapia. If it was in a spicy tuna roll, how would you know the difference?
If you want the issue to remain ......... then don't name names.
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Old 04-09-2019, 04:53 PM
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Originally Posted by olyveoil View Post
If you want the issue to remain ......... then don't name names.
Can you explain that? How does naming one or two locations solve the issue?

Here's the list for you: every grocery store, every restaurant that sources from a distributor.



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Old 04-10-2019, 06:26 AM
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Originally Posted by TUNAtunaTUNA View Post
Can you explain that? How does naming one or two locations solve the issue?

Here's the list for you: every grocery store, every restaurant that sources from a distributor.
Public Accountability.
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Old 04-10-2019, 06:45 AM
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t was posted by Dr. Jen M @AwesomebioTA

Sounds like fake news to me... bob went out for sushi and tested on what, with what, their qualifications, the equipments used. This whole post is unsubstantiated.
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Old 04-10-2019, 06:47 AM
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Chilean Sea Bass.....is this really a fish?
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Old 04-10-2019, 06:47 AM
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It seem obvious to me that there are at least two parties that don't know shit about fish; "Dr. Jen" and probably the folks in the stores/restaurants.

Am I crazy to think I can look at trout and salmon and tell they are different? WTF is "white tuna" in a raw fish? Certainly NOT a tuna. Escolar, AKA butterfish, is perfectly fine for some people.

By the way "nonexistent" Chilean Sea Bass does exist, but is properly identified as Patagonian tooth fish, and has been overfished into near oblivion.

I purchase damned near all of my seafood (not self caught) from Haag & Son here on OKI or Potters in Southport and I am quite confident of the source, as they are happy to share the info.
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Old 04-10-2019, 06:49 AM
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Originally Posted by patrick81 View Post
I don't really care that names weren't identified. As rampant as this issue is, naming them would only let the mob get out there with their pitchforks and ruin a few business without having any impact on the problem.

Key word there is "sometimes". I have caught my share of fish and I eat sushi about once a week. Still, I am sure I have been fed something that is not what I ordered.

The biggest shocker for me is the "red tuna" actually being Tilapia. If it was in a spicy tuna roll, how would you know the difference?

A VERY good reason to leave sushi off your menu, not to mention that raw or undercooked seafood warnings are on every menu that serves seafood BY LAW!!

Saltwater worms are well known to be prevalent in many fish, and may be present in any saltwater fish.

Alaskan salmon is the only fish proven to be nutritionally valuable enough to risk the dangers of eating fish of any kind, and definitely no shellfish, especially oysters, because their only purpose is to be a FILTER of the water catching impurities, then we eat the impurities. similar to pork also.
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