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How to identify the thyroid on a fish?

Answered on April 24, 2014
Created April 01, 2014 at 1:29 AM

Surely paleo man could identify the organs of different animals, after some personal attempts that only left me feeling frustrated I've come in hopes of finding a good samaritan with a knowledge of anatomy, hopefully marine anatomy!

Does anyone know how to identify the thyroid on a Fish?

Specifically a fresh uncleaned sardine?

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 02:11 PM

I'm not laughing at the idea of processing a steer or deer, I think that's awesome, I'm laughing at the idea of me doing it, where I live, and transportation and storage of that deer carcass and what my gf would think/say.

What confuses me with your first citation is that it says that in many teleosts the thyroid becomes a diffused structure but then immediately below that in bony fish the thyroid is a compact structure. Bony fish are of the Osteichthyes and aren't all Osteichthyes teleosts? If so then I'm confused because these two bullet points seemingly contradict each other.

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 01:51 PM

When you combine that with the fact that many people are exposed to known endocrine disruptors (fluorine, bromine,bpa) then it seems reasonable to simply eat the whole animal. For example if you would normally eat a small fish worth of protein per day, then you can probably afford the calcium found in it's bones, the vit a in its' liver and the t1,t2,t3,t4 and calcitriol in its' thyroid without any toxicity, after all every other animal in the animal kingdom does this pretty much every day.

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 01:46 PM

Mega-dosing is a strong word. No doubt that eating the whole fish would provide all organs, glands and bones, and if I could get whole smelt I'd consider that (cooked of course). Now if you're asking why anyone might want to eat small amounts of thyroid (besides the fact that every animal which eats its' entire pray already does this with no known toxicity) then I would raise the point that approximately 5% of the population is hypothyroid and that between 75-100 million prescriptions for levothyroxine (synthetic t4) were filled last year.

56c28e3654d4dd8a8abdb2c1f525202e

(1822)

on April 02, 2014
at 12:51 PM

also, I know people who have processed steers or pigs themselves. Hunters do it all the time with deer. I do not think it is abnormal. Processing it yourself has advantages, for example cheeks, brains, and lungs are available.

56c28e3654d4dd8a8abdb2c1f525202e

(1822)

on April 02, 2014
at 12:49 PM

http://en.bdfish.org/2012/04/introduction-of-endocrine-glands-of-fishes/

http://www.cichlid-forum.com/articles/biology_of_fish.php

32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on April 02, 2014
at 12:12 PM

Easy answer to a distributed thyroid in fish: eat whole fish. Though wondering why you want to mega-dose thyroid hormones…

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 11:48 AM

LOL @ the thought of buying an entire steer and processing it myself. Can you provide the source for your answer that the follicles are in several regions?

56c28e3654d4dd8a8abdb2c1f525202e

(1822)

on April 02, 2014
at 03:58 AM

I had no idea. It probably is. You can still do all you want if you process the steer yourself.

543a65b3004bf5a51974fbdd60d666bb

(4493)

on April 02, 2014
at 03:26 AM

i did a google image search for 'fish endocrine' this was about the best image,

http://vet.osu.edu/assets/courses/vm608/anatomy/anatomy.html

but just a drawing, not a photo. ( page down to heading 'J. Endocrine' )

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 03:04 AM

Also, isn't purchasing a steer thyroid illegal as per the FDA?

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 03:03 AM

Can you provide a source?

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 01, 2014
at 10:54 PM

Does anyone know if it is located directly below the gills and if there is typically one, or multiple and is it usually a spherical shape or butterfly shape?

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3 Answers

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Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 24, 2014
at 09:02 PM

I found the thyroid, it is almost immediately below the gills right before the heart. It is round, like a ball in fresh sardines and it is the size of a rain drop.

0
Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 01:50 PM

When you combine that with the fact that many people are exposed to known endocrine disruptors (fluorine, bromine,bpa) then it seems reasonable to simply eat the whole animal. For example if you would normally eat a small fish worth of protein per day, then you can probably afford the calcium found in it's bones, the vit a in its' liver and the t1,t2,t3,t4 and calcitriol in its' thyroid without any toxicity, after all every other animal in the animal kingdom does this pretty much every day.

0
56c28e3654d4dd8a8abdb2c1f525202e

(1822)

on April 01, 2014
at 11:07 PM

Google says that thyroid follicles are widely distributed in the fish body. the first google hit, which talks about cyclids (tilapia) says that follicles are in several regions: around the eyes, in the jaws, etc. Afraid they are different from us. Try to get one from a steer.

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 03:04 AM

Also, isn't purchasing a steer thyroid illegal as per the FDA?

32f5749fa6cf7adbeb0b0b031ba82b46

(41757)

on April 02, 2014
at 12:12 PM

Easy answer to a distributed thyroid in fish: eat whole fish. Though wondering why you want to mega-dose thyroid hormones…

Cb9a270955e2c277a02c4a4b5dad10b5

(10989)

on April 02, 2014
at 03:03 AM

Can you provide a source?

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