Advanced Topic Journal club! The science and beauty of the marine realm!

Discussion in 'Advanced Topics' started by brentch, 30 Mar 2014.

  1. brentch

    brentch

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    Following on from the thread below, I have decided to go ahead with the jpurnal thread...
    Marine ? - Marine Aquariums South Africa

    My hope is that this thread can stimulate healthy debate over a spectrum of marine topics.

    Let's keep the talk simple and too the point.

    I'll start it off with the first paper!

    "Revealing the Appetite of the Marine Aquarium Fish Trade: The Volume and Biodiversity of Fish Imported into the United States"

    http://www.plosone.org/article/fetchObject.action?uri=info%3Adoi%2F10.1371%2Fjournal.pone.0035808&representation=PDF

    Quite an eye opening publication highlighting the volume of livestock entering the USA...

    ENJOY :)
     
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  3. RiaanP

    RiaanP Moderator

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    Is their info right?
    The second most imported fish into US is the Chrysiptera cyanea. That is the blue devil damselfish. Easy recognizable by not having a yellow tail and with the black spot high up on the back fin
    Chrysiptera cyanea - Wikipedia, the free encyclopedia

    Of all the damselfish out there, this is not the one you want in your tank. Must be all the blue damselfish being grouped together under this name.
     
  4. viper357

    viper357 Admin MASA Contributor

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    10 years ago, 11 million fish imported in ONE year into the US alone :eek: kinda puts things into perspective when someone gets crucified and hung out to dry for putting a single tang in a nano.
    And that single one that has become established is causing problems to the extent that they arrange "hunting parties", for want of a better description, to try and control this invasion. Not good. :(
     
  5. RiaanP

    RiaanP Moderator

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    yeah, where the Pterois volitans came form, or how introduced are not really proven. Likelyhood of an aquarium that burst during Catrina flooding was mentioned. But take into account the houses was flooded with freshwater.

    More likely the fish arriving in water used as ballast on ships.
     
  6. RiaanP

    RiaanP Moderator

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    just checking out the top 20 fish. And my opinion on each

    [TABLE="head"]Scientific Name|Common Name|Comment
    Chromis viridis|Blue Green Chromis|Peaceful
    Chrysiptera cyanea|blue devil damselfish|No
    Dascyllus trimaculatus|domino damsel|No
    Dascyllus aruanus|Humbug damselfish|No
    Amphiprion ocellaris/percular|common clowns|1 Pair is peaceful
    Chrysiptera parasema|yellow-tail blue damselfish|Yes, if enough space
    Dascyllus melanurus|four stripe damselfish|No
    Chrysiptera hemicyanea|azure damselfish|Maybe, same as Blue yellow tail
    Nemateleotris magnifica|Fire Goby|Yes, jumpers, aggresive to own kind
    Pterapogon kauderni|Banggai cardinalfish|Yes, if tank raised
    Synchiropus splendidus|mandarin dragonet|No, for any small or new setup
    Paracanthurus hepatus|Regal Tang|Yes, only bigger tanks
    Labriodes demidiatus|bluestreak cleaner wrasse|No, only bigger tanks
    Centropage loricula|flame angelfish|Yes
    Premnas biaculeatus|maroon clownfish|Maybe, if no other clownfish
    Centropage bispinosa|Coral Beauty angelfish|Yes, aggresive to other angels
    Pseudocheilinus hexataenia|six-line wrasse|Yes, but will compete for food
    Amphiprion frenatus|tomato clownfish|Maybe, if no other clownfish
    Gramma loreto|Royal gramma|Maybe, aggressive
    Sphaeramia nematoptera|pajama cardinalfish|Yes[/TABLE]

    4 out of the top 7 fish, I will not keep. Yet they get imported by the thousands?
     
  7. SteveZi

    SteveZi

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    I would rather suspect some "aquarists" dumping them in the ocean...
     
  8. irie ivan

    irie ivan MASA Contributor

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    I have to winder if similar stats are available for SA? I doubt of the mix will vary considerably...
     
  9. brentch

    brentch Thread Starter

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    @RiaanP, I am also stumped at the volume of fish most of us on MASA wouldn't keep. Sure, I understand that most colwns are now bred in captivity, and the price of rearing in large systems is still cheaper than importing. Thus, they would not be high on that list... But, still... Eish...
     
    Last edited by a moderator: 26 Nov 2015
  10. irie ivan

    irie ivan MASA Contributor

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    Truth is, the biggest numbers will be in the lower cost, perceived "entry level" fish. Most entrants (and even some experienced aquarists) dont always research their purchases.
    Quite a few of the "chart toppers" are very abundant, easier to catch and quite tough in terms of surviveability. The fact is that we know better than keeping them, I would assume is bases on our experience with them when we started out in this hobby.
     
  11. RiaanP

    RiaanP Moderator

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    Agreed, might be impulse buying especially from newbies. Asking the LFS which fish is the hardiest or easiest to start with.

    Regarding the clowns. If they import captivity bred, do they still count that in this list? If so, wonder what is the numbers captive bred versus wild caught? Plus then they skew this document a bit. As there is no impact on wild populations. Same with the Cardinals.

    The profile fish matching South Africa. Do not think so. Do not see that many Flame angels compared to other fish coming in.

    Pity also on the Regals. Most will end up in tanks that is too small. But yet they are number 12 on the list.
     
  12. irie ivan

    irie ivan MASA Contributor

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    My reference regarding the local topseller was more in reference to the chromis, dominos, nemos, dorys and other damsels.
    American shipments not as common is SA yes.
     
  13. shan

    shan

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    Regarding the damsel fish, when watching the American tv programs currently on discovery, every week, you always see damsels. They seem to put it in every tank. I believe that they like the fact that they are hardy and that's it.

    Regarding the Hugh importation, we have to remember that USA is Hugh. 350 million some odd people. And then on top of this, how much of these fish are exported - remember that America imports from china to export to the rest of the world so why would they not do the same with fish and corals. An example is Florida ricordia - the ones mainly on the market do not come from Florida but pass via the USA to us.
     
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