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World's Tiniest Vertebrate Found

foidulus writes "The BBC reports that American scientists have identified the world's tiniest fish living around Australia's Great Barrier Reef. It is also the tiniest animal with a backbone. The male of the stout infantfish is only about 7 mm(or less than 1/4 of an inch) long. It has a life span of only around 2 months which scientists say may be an advantage because it can evolve rapidly."

37 comments

  1. That's about the right size... by OneDeeTenTee · · Score: 5, Funny

    ...to put in your ear.

    Have they tested the translation capabilities of these little critters?

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    Stop the world; I need to get off.
    1. Re:That's about the right size... by Dizzle · · Score: 1

      No, but if it's related to the Babel fish its translation abilities are limited.

      --
      -Dizzle
      "I most likely AM so interested in myself."
  2. less than 1/4 of an inch ? by Anonymous Coward · · Score: 2, Informative

    25.4mm/4 = 6.35mm
    I would say just over a 1/4 of an inch

    dumb ass reporter!

  3. Oh no! by Twintop · · Score: 2, Funny

    We need to destroy these creatures before they evolve into something that can take over the human race! With only a 2 month lifespan, they could easily out-evolve us within our children's lifetimes!

  4. Redundant by Anonymous Coward · · Score: 0

    Doesn't being the tiniest fish imply being the tiniest invertebrate? (Posted anonymously due to pedantic shame.)

    1. Re:Redundant by Finuvir · · Score: 0

      What if there was a smaller bird or mammal? Then that would be the smallest vertebrate (unless there was something smaller again).

      --
      Why is anything anything?
  5. Jumbo shrimp _not_ an oxymoron! by DaoudaW · · Score: 0, Offtopic

    Jumbo shrimp _not_ an oxymoron!

    1. Re: Jumbo shrimp _not_ an oxymoron! by DaoudaW · · Score: 1, Informative

      I'm tired of clueless moderators....

      You clearly didn't get it so I'll try to explain it to you. "Shrimp" has entered the English language as a word meaning something that is exceptionally small, "jumbo" of course indicates the opposite extreme, thereby causing jumbo shrimp to be an oxymoron.

      The stout infantfish however is much smaller than a shrimp (the species). In fact, a quick estimate indicates that a typical shrimp weighs 100 - 200 times more than the stout infantfish, making it "Jumbo" in comparison.

      I think thats a humorous connection to a well known oxymoron. You don't have to agree, but to mod it down as off-topic is simply an abuse of power.

      P.S. In my original I put an html tag flash, as in newsflash, in front of the post, but slash stripped it out as invalid code.

    2. Re: Jumbo shrimp _not_ an oxymoron! by Anonymous Coward · · Score: 2, Funny

      I see.
      So I could make a post saying that "the Eiffel Tower is big", and then when somebody modded me off-topic, I could complain, saying that I made a joke, because the Eiffel Tower is big, but the stout infantfish is small, and there is a connection between them because fish is served in the Eiffel Tower restaurant, and that they "abused their power" by modding down a post whose on-topicality should have been obvious to everyone.

      P.S. A list of acceptable HTML tags is displayed beneath the text box into which you typed your post.

  6. Could be tiniest sentient too by Thinkit4 · · Score: 2, Funny

    Sentience is theorized to exist in the thalamus, which is a feature that evolved with vertabrates. You are in the cerebral spinal fluid in the third ventricle between the lobes of the thalamus.

    --
    -I am an elective eunuch.
    1. Re:Could be tiniest sentient too by flewp · · Score: 2, Funny

      How do I get out of here? This spinal fluid is kind of gross.

      --
      WWJD.... for a Klondike bar?
    2. Re:Could be tiniest sentient too by Anonymous Coward · · Score: 0

      I know of no cognitive scientist who seriously thinks having a thalamus indicates sentience. If you have one or more to list, please do so.

    3. Re:Could be tiniest sentient too by pinkboi · · Score: 1

      That's not what he meant. Note the "could." Can you name anything that has sentience that *doesn't* have a backbone? (maybe cephlapods, but they are wierd so they shouldn't count)

      --
      "The absurd is clear reasoning recognizing its limits"
      -Albert Camus
    4. Re:Could be tiniest sentient too by Alsee · · Score: 2, Funny

      Can you name anything that has sentience that *doesn't* have a backbone? (maybe cephlapods, but they are wierd so they shouldn't count)

      In that case I guess most slashdot readers don't count either.

      -

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  7. What's that in the picture? by DeComposer · · Score: 1, Flamebait

    Am I the only one who thinks they're showing a picture of the wrong fish?

    The areticle clearly states that the stout infantfish is ~7mm long. The picture shows a fish that is clearly 10mm long. Which makes me think that the picture they're actually showing is a picture of the world's second smallest fish, the goby fish.

    Stupid beeb editor.

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    Karma
    1. Re:What's that in the picture? by Anonymous Coward · · Score: 0

      Your assertion is false. Read the article again. It says, "the females - at around 8.4mm - seem to be bigger than males, who usually measure in at a diminutive 7mm."

    2. Re:What's that in the picture? by jfengel · · Score: 1

      That was pretty much my impression, too. I'm kinda hoping that when this hits Science News it'll have the the right photo. Except that I don't really know all that much about fish, and if they were to put a picture of a trout with a scale showing "7 mm" next to it I'd probably believe them.

    3. Re:What's that in the picture? by NaturePhotog · · Score: 3, Informative

      It's a picture of the stout infant fish, alright. Check out the Australian Museum Online site for more information and pictures. I believe the picture shown is of a pregnant female, which as other posters have noted is larger than the male at a whopping 8.4mm.

      Also, the length is likely the standard length, which is to say, it doesn't include the fleshy bit of the tail, but only up to the end of the spine.

      One noteable difference from the dwarf goby fish is that stout infant fish apparently lack pigmentation except in the eyes. The dwarf goby is a nice shade of orange.

    4. Re:What's that in the picture? by Feztaa · · Score: 1

      Clearly, they've found the world's largest infantfish.

    5. Re:What's that in the picture? by DeComposer · · Score: 1

      I'll readily concede your argument. And may I just say that your knowledge of marine life is vastly superior to that of any Slashdotter I have ever encountered. :~)

      Still, it seems ridiculous to loudly proclaim the discovery of the smallest vertebrate in the world and then show me a picture of an extra-large one.

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      Karma
    6. Re:What's that in the picture? by NaturePhotog · · Score: 1

      My knowledge of marine life is minor. My knowledge of Google is sufficient for many tasks :-)

  8. not for fishing by Madcapjack · · Score: 0, Offtopic

    I think my bait would eat the fish!

  9. Um, No ... by SteveM · · Score: 2, Informative

    Doesn't being the tiniest fish imply being the tiniest invertebrate?

    Given that fish are vertebrates I'm gonna go with NO!

    SteveM

  10. Khaaaannnnnn! by Anonymous Coward · · Score: 0

    What sucks is when they get in yoiur ear and allow people to control you.

    KHaaaaaaannnnnnnnn!

  11. This really IS news by Anonymous Coward · · Score: 0

    'Cause I thought Darl had the distinction of having the world's smallest vertebrate.

  12. Living long evolutionary disadvantage by Tyreth · · Score: 1
    It has a life span of only around 2 months which scientists say may be an advantage because it can evolve rapidly.

    *may* be an advantage? That's awfully certain. Not to mention that by this logic bacteria have a greater advantage over pretty much all other life, since they can "evolve" so rapidly. So, living longer lives is no longer an 'advantage'? The article itself says:

    "It's interesting that these animals experience several generations a year," said Dr Watson. "This suggests they could evolve quickly as well."

    Which makes a bit more sense.

    1. Re:Living long evolutionary disadvantage by BerntB · · Score: 2, Informative
      *may* be an advantage? That's awfully certain. Not to mention that by this logic bacteria have a greater advantage over pretty much all other life, since they can "evolve" so rapidly.
      The way I've seen evolutionary biologists write about this, is that built in length of life is optimized differently for different situations/evol. niches.

      For instance, it's quite expensive in energy to build bodies that can age (good cell repair, etc) so if the average time before an animal is eaten by a predator is short, it's probably not a large evolutionary pressure to be able to get old. The energy is put into growing up fast and get to reproductive age early, instead.

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  13. world's smallest vibrator??? by Anonymous Coward · · Score: 0

    Oh, whew, my wife still needs me for something.

  14. These should be great for genetic experimentation by ALeavitt · · Score: 2, Insightful

    In tons of biology and genetics classes, people selectively breed fruit flies because of their short lifespan (among other reasons.) These guys could be useful in a similar reguard, but now we'll all have vertebrates to play with. I can't wait.

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  15. Re:These should be great for genetic experimentati by PKC+Jess · · Score: 1

    True, but (I say this as a question as I am not 100% on this) but are there not rules regarding the use of vertebrates in science?

    I remember in good old elementary school where we couldn't use vertebrates in experiments. (at least when it came to looking inside them or "treating" them to your new chemicals.)

  16. Addendum: The point :-) by BerntB · · Score: 2, Informative
    I posted to early and missed the last part:

    the biologists probably don't know enough about the living situation for the fish to have more than hypotheses about why their generations are optimized like that.

    So the researchers probably don't know yet.

    (And yes, bacteria do evolve fast. That's why our immune system isn't based on DNA -- we have too long generations.)

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  17. My favorite tiny thing by fm6 · · Score: 2, Informative
  18. Cool, I can add them to my "aquarium" at work... by Dave21212 · · Score: 1


    Cool, I can add them to my aquarium at work and my Sea-Monkeys can have pets of their own !!!

    Sea-Monkeys® are a true miracle of nature. They exist in suspended animation inside their tiny eggs for many years. The instant-life crystals, in which the eggs are enclosed, preserve their viability and help to extend still further their un-hatched life span! Sea-Monkeys are real Time-Travelers asleep in biological time capsules for their strange journey into the future!

    Scientists call this amazing rare process "cryptobiosis" which means, "hidden life". Among the types of life on Earth that are cryptobiotic in early stages of development are the seeds of higher plants (wheat grains from the tombs of the ancient Egyptian Kings have sprouted after being sealed in urns for more than 2,000 years), the larvae of certain insects, and the thick-shelled eggs of some crustaceans such as Daphnia, seed Shrimps (Ostracods) and Brine Shrimp (Artemia salina). Sea-Monkeys too belong in this category, since they are a variety of Artemia. A relative of Lobsters, Crabs, Fairy Shrimp and other crustaceans, instead of originating in the ocean, Artemia are found in salt lakes and salt evaporation flats. The waters of these areas are often so salty that Artemia may be the only non-microscopic animal inhabiting them.

    Are they Brine Shrimp?
    Because fish eat and thrive on brine shrimp, for years they were collected as eggs or alive, to be sold as an aquarium "food." Although all along, brine shrimp had the very qualities that would, at a later date, make them one of the most desirable pets ever sold, it simply never "dawned" on anyone to consider them as anything other "fish food". Now, thanks to Sea-Monkeys, this attitude has changed.

    Although Sea-Monkeys are a species of brine shrimp, they are unique. We not only unlocked the most elusive secrets of their life cycle, we created new formulas to keep them alive under conditions found in the average home--an accomplishment never before achieved! Finally, after years of crossbreeding, we developed a hybrid. These amazing new hybrids grow larger and live longer than any "natural" variety of brine shrimp.

    How long do Sea-Monkeys live?
    Thanks to new computer-driven processing technologies and ultra-pure, non-toxic chemicals, twice as many Sea-Monkeys instantly hatch, grow larger and live longer than ever before.
    An exact, pre-blended formula of "magic crystals"--and live Sea-Monkey eggs are inside the envelopes supplied in every Sea-Monkey kit. When added to water, live Sea-Monkeys will hatch. That's why anyone can get perfect results without any knowledge of chemistry or biology. Just by following the easy instructions you create Instant Life®. The only "extra" is the water. At birth, the Sea-Monkeys are very tiny, no larger than the "period " at the end of this sentence. That is why it's possible to "overlook" them when they are first born. Since their fate is in yours hands, do not discard the formula if you don't see them right away. To do so would be like "throwing the baby out with the bath water."

    Are Sea-Monkeys safe?
    Sea-Monkeys are in no way harmful to humans or the environment. If they somehow find their way into natural water ways or sewer lines, they simply will not be able to survive outside of the formula.

    --
    "Whoever would overthrow the liberty of a nation must begin by subduing the freeness of speech."--Benjamin Franklin
  19. Rapid Evolution by crashnbur · · Score: 1

    "It has a life span of only around 2 months which scientists say may be an advantage because it can evolve rapidly."

    Another reason why the quest for eternal life is an evil one!

    We're equipped for this world here and now... As much as I've love to experience the technological wonders of a world 3000 years from now, maybe I wouldn't be prepared for the variations in temperature, climate, or even social norms. Sure, I could adjust, but how well? This body was created specifically for life in the 21st century...

  20. All together now.. by adeyadey · · Score: 1

    Awwwww!

    --
    "You lied to me! There is a Swansea!"
  21. Quick Evolution by chia_monkey · · Score: 1

    As I sit here doing my morning Slashdot readings, I came up with a thought that has me a bit perplexed.

    It says these fix evolve quickly. Let us say there is a minor evolutionary change every five generations or so. That would be one year to have five changes. By the fifth change, there may be a marked difference between the new fish and the its great great grandmother/father.

    My question is this. How long until the evolution creates a new species? Two years down the road, will you be comparing two separate fish even though they came from the exact same gene pool? Could a biologist or relatively smart person in the field explain that to me?

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    "He uses statistics as a drunken man uses lampposts...for support rather than illumination." - Andrew Lang