Talk:Atlantic bluefin tuna

this page uses text adapted from the public domain California Department of Fish and Game page Tuna & Mackerels Group.

Typical size?
The article says:

The typical size is 2 m (6.6 ft) at about 500 kg (1,100 lb).

Really? Can someone who is expert in this area double check that? I appreciate that Northern bluefin tuna can grow that big, but surely that is not the typical size. That's enormous: half a metric tonne, 0.55 tons, or 78 stone. Other sources I have looked at, such as this, suggest much smaller. --DZR 19:03, 30 November 2006 (UTC)


 * This site says "The bluefin tuna is one of the largest of the tunas" and "Bluefin commonly attain a size of 78 inches (200 cm)." The 7 kg. figure for typical weight must be a typo, as the same site describes the young as "up to a size of 90 to 130 lbs. (40 to 80 kg)." -- Donald Albury 23:53, 4 December 2006 (UTC)
 * Wouldn't really be sure about the weight, but the length is quite average. Yellowfin over here average at around the same size generally. Shrumster 15:00, 5 August 2007 (UTC)


 * I fish bluefin tuna off of northlake, PEI in Canada. We just wrapped up part of the season(they have the quota partially split this year, 40 metric tons in august and the rest in September, I'm not sure how much though) and if you can get one that weighs over 800lbs not dressed("dressing" is when the head, tail, and organs are removed, it is then weighed again, the dress weight is then given. When its payed for at an auction(a #of$/lb) they pay for the dressed weight) then you've got a big fish, a nice sized fish. A lot of the oens that come in are like 300-500lbs round(not dressed). However, years ago(1970s and such) the average size you have posted here would be very close. They have gotten a lot smaller. So the average weight would have changed over the years wouldnt it? 142.176.58.216 14:03, 8 August 2007 (UTC)

Consumer Advice/Advocacy
The line "and it is thus better to avoid consumption of bluefin tuna until stocks recover." is inappropriate for an encyclopedia article. Maybe you could find some source that offers this advice and comment on that.24.136.6.69 (talk) 02:08, 10 March 2008 (UTC)

Conservation Status
The IUCN Red List currently divides the Northern bluefin tuna into two Infra-specific Taxa--the Eastern Atlantic stock and the Western Atlantic stock. These two stocks have been assessed with two different levels of endagerment: Endangered for the Eastern stock, and Critically Endangered for the Western stock. This Wikipedia article currently lists the conservation status for the entire Northern bluefin tuna population as Critically Endangered. Is there a way to properly convey the correct information in the Taxobox? By the way, the IUCN Red List currently states the conservation status for the entire Northern bluefin tuna population as Data_Deficient. I'm not sure if listing DD in this article is entirely appropriate, but I am certain that it is not factually correct to list the entire population as Critically Endangered. Steamroller Assault (talk) 04:19, 24 September 2008 (UTC)


 * (This was originally going to be a reply for Wikipedia talk:Taxobox usage to a slightly different question, but I've moved it here) Unfortunately the species as a whole is has a "Data Deficient" evaluation, and that's what should be used in the taxobox until IUCN re-evaluates. You can (and should) write about the status of the different subpopulations in the body of the article. Alternatively, as the IUCN's status is out of date (last evaluated 1996), you could try using the status from another program other than the IUCN but I can't find anyone else who's assessed the global population. Really the best thing to do is write more about it in the text. Oddly, text that was previously in the article about the fish's decline has disappeared. (It no longer even mentions Japan as the major market for Northern Bluefin, nor the speculation that Japan only continues its globally unpopular whaling program to divert attention from tuna fishing) Might be worth seeing what you can salvage from the article's history too. —Pengo

Thermoregulation
What's the sigfigance of this? is it unique to this species? otherwise why is it included, most articles on fish don't contain specific details on their anatomy.unsigned


 * This is a notable ability that this fish has. Most other fish do not have this capability. A better explanation is provided on the Pacific bluefin tuna page.  XXVII (talk) 07:28, 9 May 2010 (UTC)

Recommendation to merge some sections with Tuna page.
There is a lot of overlap between the Thermoregulation, Conservation Status, Environmental Issues, and Farming sections for the Pacific bluefin tuna, Northern bluefin tuna, and Southern bluefin tuna. Some of this information is also repeated on the Tuna page. Since most of the information is general and not specifically related to the individual species I propose that this information should be discussed at the genus level (i.e. merge with the Tuna page). An alternate proposal might be to create new pages geared to the specific topics like Thermoregulation in Tuna and Conservation Status, Environmental Issues, and Farming of Bluefin Tuna.


 * Note: I have copied and pasted this talking point on each of the pages listed above. XXVII (talk) 07:46, 9 May 2010 (UTC)


 * There is some merit in rationalizing the various subtopics, but Pacific, Northern and Southern bluefin tuna also need their own articles, with much expanded sections on their industrial fishing. --Epipelagic (talk) 08:57, 9 May 2010 (UTC)


 * Agreed. Clarification: The proposal is to rationalize the various subtopics, and merge repeat information in a logical manner. The Pacific, Northern, and Southern bluefin tuna need their own articles, and these articles should be expanded.XXVII (talk) 00:14, 16 May 2010 (UTC)


 * merger is absurd. each species level article has its own page by long standing wikipedia convention. so what if several of the species have common characteristics. the ford and chevy autos have many common characteristics. would you merge them? Lllopez66 (talk) 15:21, 29 October 2010 (UTC)

News source
For those interested, here is a news source to use as a reference: Tuna fished 'illegally' during Libya conflict, by Richard Black, BBC –  VisionHolder « talk » 12:10, 16 November 2011 (UTC)

And another one: Small steps for tuna, sharks and swordfish, by Richard Black, BBC –  VisionHolder « talk » 22:12, 19 November 2011 (UTC)

Requested move

 * The following discussion is an archived discussion of a requested move. Please do not modify it. Subsequent comments should be made in a new section on the talk page. No further edits should be made to this section. 

The result of the move request was: page moved. Vegaswikian (talk) 19:58, 13 December 2011 (UTC)

Northern bluefin tuna → Atlantic bluefin tuna – None of the four criteria at WP:FISH are fulfilled by the name northern bluefin tuna for Thunnus thynnus. Specification for the four article name points at WP:FISH: In summary: None of the criteria are fulfilled by the name northern bluefin tuna. Three (arguably all four) are fulfilled by Atlantic bluefin tuna. The WP:FISH requirement is that at least one is fulfilled. If the page is moved, I propose northern bluefin tuna is changed to a disambiguation page to avoid confusion. I will do that unless there are major objections. I have left a link to this discussion at WP:FISH. RN1970 (talk) 12:04, 6 December 2011 (UTC)
 * 1(i): The name northern bluefin tuna is also frequently used for Thunnus tonggol and populations that now are Thunnus orientalis. Until a decade ago (Collette 1999: Mackerels, molecules, and morphology chapter in Proceedings of the 5th Indo-Pacific Fish Conference, Noumea), the latter was often treated as a north Pacific subspecies of Thunnus thynnus. When these were combined in a single species, it was the bluefin of northern oceans and the name northern bluefin was appropriate, but following the split that is not the case and major authorities (e.g., IUCN, FishBase, Debelius 1997: Mediterranean and Atlantic Fish Guide, Kells & Carpenter 2011: A Field Guide to Coastal Fishes, from Maine to Texas) have shifted to the far better Atlantic bluefin tuna for Thunnus thynnus (it is the only bluefin found widely in the Atlantic).
 * 1(ii): When using northern bluefin tuna, confusion is likely (see above). A clear illustration of this point is the photo from Osaka Aquarium Kaiyukan currently used in the wiki article. Their northern bluefin were caught locally = Thunnus orientalis (I will remove the photo from the article later, but have left it for now to prove this point).
 * 1(iii): See entry 1(i).
 * 1(iv): See entries above.


 * Support move and disambiguation page per reasons given.--  Obsidi ♠ n   Soul   12:46, 6 December 2011 (UTC)
 * The above discussion is preserved as an archive of a requested move. Please do not modify it. Subsequent comments should be made in a new section on this talk page. No further edits should be made to this section.

Article way out of date
The article seems to be several years out of date. It needs to be brought up to the present with information about whether the population is growing, declining, considered endangered and if so by whom, etc. Vaughan Pratt (talk) 07:16, 29 September 2015 (UTC)


 * There is a large amount of updated literature on these fish that should be added to this page. ICCAT has published two updated reports since the one referenced in this article. As they are such a threatened and heavily fished fish, this information is very relevant to a number of sections on this page. Andleon0325 (talk) 12:42, 22 September 2020 (UTC)


 * The overall article tone still seems dominated by the catastrophism of 20 years ago when it became widely understood that tuna were being severely overfished almost everywhere. While conservation successes since have been patchy, bluefin numbers have widely recovered, particularly in the eastern Atlantic and Mediterranean. This is mentioned briefly in the article, but it seems like an afterthought. See this Guardian piece. --Ef80 (talk) 14:29, 9 February 2024 (UTC)

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Confusion with Pacific bluefin
If I am not mistaken, shouldn't all of the mentions about Japanese bluefin tuna fisheries refer to the Pacific species? — Preceding unsigned comment added by Pseudanthias (talk • contribs) 05:41, 24 June 2020 (UTC)

Please Merge
Please merge this article with the "Pacific" bluefin tuna article. It's ridiculous to have two separate articles on the same fish. 73.6.96.168 (talk) 13:46, 1 June 2021 (UTC)
 * Currently regarded as separate species (thynnus vs orientalis), so not appropriate. -- Elmidae (talk · contribs) 14:26, 1 June 2021 (UTC)

Semi-protected edit request on 20 May 2023
I'm a scientist that works with Atlantic tuna fisheries in the Mediterranean. I want to challenge the reference that says they are near threatened, because recent studies show that stocks have steadily increased. ICCAT has published these data, and even the IUCN website says "Least concern" and not "near threatened". 195.57.117.234 (talk) 23:24, 20 May 2023 (UTC)
 * Red question icon with gradient background.svg Not done: it's not clear what changes you want to be made. Please mention the specific changes in a "change X to Y" format and provide a reliable source if appropriate. What source? Could you provide links and citation to where it says this?  Heart  (talk) 23:27, 20 May 2023 (UTC)
 * See my comment in 'Article way out of date' section upthread. --Ef80 (talk) 18:32, 10 February 2024 (UTC)