Talk:Lungfish

message: "Changes in physiology allow the lungfish to slow its metabolism to greater than 1/60th of the normal metabolic rate..."
Shouldn't this read "less than 1/60th"? Gary 05:02, 27 March 2007 (UTC)
thread_title:  minor problem 

message: I am not sure what the rights and wrongs of this are, but discussion does not belong in the article itself so I am moving it here:
:Lungfish do not have lungs but breath through external gills.
::Not true: they have a basic lung (check out http://bio150.chass.utoronto.ca/animals/vertebrata.html)
:::That site requires auth... but here's another http://bill.srnr.arizona.edu/classes/182/Circ-1.htm  —Preceding unsigned comment added by 131.111.200.200 (talk) 01:04, 26 November 2008 (UTC)
thread_title:  Lungs? 

message: Unlike many fish articles this does not mention its subject as food although a web search shows that they are eaten. That is not a great criticism of the article but the following method of catching them might be worth confirming. In the seasonally dried Tana delta in Kenya a hunter would stab a pole with a long metal spike into the ground and it was said that the groan given out revealed that a lungfish had been found.--SilasW 19:56, 26 August 2007 (UTC)
thread_title: Lungfish as food

message: Huh.  Currently the page doesn't mention lungs or gills.  Seems like something of an oversight.  The facts about the lungfish's occluding dental blades and fleshy pelvic fins are fascinating, but as a casual reader (and a non-biologist) I'm really here for the lungs (if any).  Please help if you can!  —Jorend (talk) 14:50, 26 March 2008 (UTC)
replies: text: wow, you're right! what's up with that? i'm not a member of WikiProject Fishes, but i can certainly try dig up some pertinent sources. (but so can you, for that matter! i'm not a biologist either, fyi.)  - Metanoid (talk, email) 18:40, 26 March 2008 (UTC)
thread_title:  Lungs?? 

message: Hi, all. This is a work-in-progress using Template:Clade to form a better graphic representation of the taxonomy. However, the simple ASCII character diagram reproduced below from the article is very confusing. I have questions on the proper placement of the clades (e.g. is Order Lepidosireniformes really a daughter taxon of Family Neoceratodontidae?). Compounding the problem is my completely lack of knowledge in this area and lack of a reference for the taxonomy section. Any assistance in those areas? I'll gladly monkey around with the template below to make it fit right, but I'll need the input of an expert to guide the cladogram. Or if anyone wants to pick it up from where it is and tweak it until its right, that would be great, too. Cheers, Rkitko (talk) 02:22, 24 November 2008 (UTC)
thread_title:  Taxonomy section 

message: While this fish has been named "lungfish", there are a lot of other fish that breathe air and it is interesting to study this collection of fishes. Could this be the "salamanderfish" disambiguation, and have another page listing other fishes that have lungs. Or are all the others using gills?
The walking catfish, the Siamese Fighting Fish, as well as most of the fishes that live in low-oxygen conditions like swamps.  —Preceding unsigned comment added by 216.85.27.238 (talk) 20:42, 27 January 2009 (UTC)
thread_title:  Other air-breathing fish? 

message: Is anyone able to verify this stuff about breathing through a gas bladder?  I understand the idea that the gas bladder performs gas exchange with the fish's blood, but that doesn't represent respiration for the purposes of maintaining metabolism.  Does the gas bladder allow for diffusion of gases from the water outside the fish? I wouldn't have thought so. - Richard Cavell (talk) 06:19, 20 December 2009 (UTC)
replies: text: Yep, just check any vertebrate biology or ichthyology textbook.  In fact, lungs are the primitive state, with gas bladders representing a modification of the original lungs.  In most basal fish (and several more derived fish), they can gulp air from the surface and push it into the gas bladder/lung, where it functions to oxygenate the blood that nourishes the heart.  Coleen Farmer's 97 paper on this has more than enough details. Mokele (talk) 16:44, 20 December 2009 (UTC)
replies: text: Thanks for your reply. Just to clarify, the gas bladder can perform gas exchange with the air gulped from the surface, but not with water? - Richard Cavell (talk) 22:04, 20 December 2009 (UTC)
replies: text: Correct.  African and South American lungfish (who have non-functional gills, at least as far as gas exchange goes) will actually drown if held underwater. Mokele (talk) 03:10, 21 December 2009 (UTC)
replies: text: Okay. I believe you. But in that case, it's because the fish are respiring with their lungs, not with their gas bladders. Is there any creature that relies on gas exchange from the gas bladder, or for which the gas bladder contributes an appreciable percentage of gas exchange? (Note for amphibians, the skin is a significant site of gas exchange.)- Richard Cavell (talk) 09:23, 21 December 2009 (UTC)
replies: text: Gas bladders *are* lungs, just modified.  Back when it first arose, the first lung was just a balloon connected to the esophagus via a tube, and was used to take in air from the surface to nourish the heart (which is what's seen in modern gar and bichir).  Its role of a buoyancy organ was secondary.  Over time, some fish kept the primitive condition, others improved its function to allow better gas exchange (lungfish), others completely cut it off from the outside, using a specialized gas organ to fill the bladder from blood gasses (such as eels), while most oceanic fish (such as tuna) have lost it entirely (since it would be an impediment to changing depth).  So it's all the same organ, it's just a relatively arbitrary classification of what name we use.Mokele (talk) 15:13, 21 December 2009 (UTC)
thread_title:  Breathing through a gas bladder 

message: Could someone please add a diagram to the sections on the perfusion of water and of air. These paragraphs are fascinating, and I think a diagram would help tremendously.  —Preceding unsigned comment added by 90.197.5.59 (talk) 13:19, 29 May 2010 (UTC)
thread_title:  Lungs, gills and circulation diagram 

message: “The Queensland lungfish at the Shedd Aquarium in Chicago has been part of the permanent live collection since 1933" - this statement and its reference are not date-stamped. The fish might have died by now.
AmirOnWiki (talk) 13:59, 20 May 2011 (UTC)
thread_title:  Longed-lived, but how long? 

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thread_title:  External links modified 

message: I've redirected Ceratodontiformes to Lungfish as it looks like the two lungfish orders have been combined into Ceratodontiformes as listed on CoF. Lepidosireniformes is no longer recognized, and both Lepidosirenidae and Protopteridae are in a newly named suborder called Lepidosirenoidei according to DeepFin. Ceratodontiformes only refers to extant taxa and the most recent extinct taxa in subclass Dipnoi (now "Ceratodontae"), but I'm not sure how exactly Ceratodontiformes now fits into the cladogram. – Rhinopias (talk) 20:37, 28 September 2017 (UTC)
replies: text: Good move. Seems there are extinct species of the extant genera, by the way. FunkMonk (talk) 20:48, 28 September 2017 (UTC)
replies: text: I see extinct species in Protopterus, but are there any in Lepidosiren or Neoceratodus that aren't mentioned that would make those non-monotypic? Also, I suppose Neoceratodontidae is incorrectly redirected to Neoceratodus if Ceratodus and Metaceratodus are also in the family. I can attempt to start sorting out these pages and adding taxonomy templates. – Rhinopias (talk) 22:51, 28 September 2017 (UTC)
replies: text: Looking at Fossilworks, there seem to be some, but I'm not sure how up to date that is. FunkMonk (talk) 22:56, 28 September 2017 (UTC)
replies: text: So, I was confused about whether or not to change this—removing Lepidosireniformes—because the secondary sources are in conflict. CoF doesn't acknowledge the order (in agreement with DeepFin, a primary source), but both FishBase and WoRMS recognize the order. Now I am more confused because I found this 2009 text that discusses suborder Lepidosirenoidei, but many recent publications still mention Lepidosireniformes… so I am not convinced this is really established yet? – Rhinopias (talk) 01:33, 17 October 2017 (UTC)
thread_title:  Updated classification of Ceratodontiformes 

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*Added archive https://web.archive.org/web/20081211022858/http://www.primitivefishes.com/Gilled%20African%20Lungfish.htm to http://www.primitivefishes.com/Gilled%20African%20Lungfish.htm
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thread_title:  External links modified 

message: Is it possible for someone to re-write this in a form of English that the average Joe could understand?
Having some zoological training I was able to read and comprehend but only with a deal of concentration to remember words heard many years ago at college and to interpret the style of professors who saw their job was to prove they were clever (which by inference said that you weren't). 75.162.89.171 (talk) 00:32, 7 January 2022 (UTC)
thread_title:  Critical of style 

message: Write a detail account of lung fish ? 103.57.168.3 (talk) 21:36, 18 May 2022 (UTC)
thread_title:  Zoology