Mystery of the disappearing fish

Discussion in 'General Discussions and Advice' started by FransSny, 8 Mar 2011.

  1. FransSny

    FransSny

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    Ok , as most know I am not running a tank at the moment (built already but just not getting around to it) but I am posting to get some input why fish might mysteriously "vanish"

    The tank in question is mature, well stocked and maintained, the only fish this seems to be happening to are smallish in size (goldie size) and this suggests a predator of sorts....but on the other hand small clowns are being left alone

    I was thinking crab ? No carpet nennies etc in the tank.

    Any input would be appreciated.
     
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  3. butcherman

    butcherman Moderator MASA Contributor

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    Sucked into overflow?

    crab, mantis shrimp?

    just died behind rocks?
     
  4. FransSny

    FransSny Thread Starter

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    Thanks butcherman, but no fish in overflow, no bodies, no clicking mantis...I am also partial to a crab but throwing the Q out there
     
  5. 459b

    459b Moderator MASA Contributor

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    brittle star?
    giant brisstle worm?
     
  6. FransSny

    FransSny Thread Starter

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    mmm interesting dave, the brittle star...there are about 5 Huge ones in the tank. I have never personally heard of them taking live fish.

    Please elaborate
     
  7. 459b

    459b Moderator MASA Contributor

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    they wont take live swimming fish but are opportunistic and the larger ones can overwhelm sleeping fish.
     
  8. crispin

    crispin

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    green brittle stars are predatory, especially to fish that sleep in a reef, as are some other stars, chock chip for example, but most brittle stars are fine. its only really the green death and then he needs to be sizeable before it takes fish
     
  9. 459b

    459b Moderator MASA Contributor

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    thanks Crispin, thats the word i was looking for.
     
  10. Perky Pets

    Perky Pets Sponsor

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    Giant cup mushroom ?
     
  11. FransSny

    FransSny Thread Starter

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    Also a thought..dave if I remember correctly that elephants ear you got from me took a fish ? No such luck in this tank though

    crispin and 459b, after the initial post by 459b (dave) I did some searching on the net and it seems like not only the green death presents predatory behaviour. Some of the other species MIGHT do this as well ...opens up a whole lot of other things to consider when buying . Quite interesting I think.

    Thanks for all the input guys....more minds the merrier :)
     
  12. 459b

    459b Moderator MASA Contributor

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    it actually took two. Somehow got hold of both my devils blue damsels at the same time. I then had a brief lapse in judgement and saved both fish. It also depleted my shrimp population. Yet i cant wait to get antoher one. Except this time ill put it in a coral only tank.
     
  13. FransSny

    FransSny Thread Starter

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    :lol::lol: At least we got rid of those damsels in the end ....I had 3 of its babies on a rock doing well but for soem reason after the move they started to wither away...have one still going so lets see
     
  14. HenkHugo

    HenkHugo

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    Hi guys,

    It’s my tank Frans is talking about. There is a major problem with fish disappearing. Over the last 10 days I have lost 5 goldies, 2 zebra gobies and 1 rather expensive candy cane gobie.

    I built and set a crab trap last night but there’s nothing in it this morning. I have also noticed one of the brittle stars have moved into the candy cane gobies cave….
     
    Last edited: 9 Mar 2011
  15. dallasg

    dallasg Moderator MASA Contributor

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    i have the same, lost 2 cleaner shrimps, 1 clown, 1 regal tang
    i have to leopard stars, which now i might remove
     
  16. rakabos

    rakabos

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    Ive also lost 3 firefish recently and the only thing in the tank remotely predatory is a brittle star...........
     
  17. dropzone newbee

    dropzone newbee

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    6 minths back i had exactlky the same problem
    i lost over 10 goldies over a period of a few weeks ! they were all eating like mad at the time !
    i had my prize mantis shrimp in a peice of live rock i was very proud of !! he was tiny , but grew into a 4 cm critter !!!
    after much reading i took him out and havnt lost a goldie since !!!

    so i say

    MANTIS ;)
     
  18. FransSny

    FransSny Thread Starter

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    Yip after the initial post by 459b, I did a lot of reading and it seems they might be the culprits :p

    Just check how they clean out a clam

     
    Last edited by a moderator: 27 Nov 2015
  19. rakabos

    rakabos

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    hectic! Is that the green death ?
     
  20. 459b

    459b Moderator MASA Contributor

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    How big are the ones in the the tank?
     
  21. FransSny

    FransSny Thread Starter

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    BIG ! Definitely bige enough to take a goldie....now how to catch them out as there is like 5 / 6

    Suggestions
     
    Last edited: 9 Mar 2011
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