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Corydoras acting weird

Discussion in 'General Freshwater' started by Taylor Price, Dec 27, 2018.

  1. Taylor Price

    Taylor Price AC Members

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    I have 6 corydoras and two of them started darting and rubbing on anything in the aquarium and that is not normal at all. I don’t see any spots like it’s ich but maybe it’s early signs? I want to put salt in there just in case but I have a couple snails and ghost shrimp and I am not sure if it’s safe for them. What should I do? They’ve since slowed down/stopped darting but I’m still worried. Do you think they just got stressed about something for a minute?
     
  2. the loach

    the loach AC Members

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    Rubbing /flashing is a sign of external parasites. Could be flukes, for instance.
    Do not use salt. This will harm the cories more as the parasites.
    Check water parameters, keep up good maintenance and keep an eye on it. Under proper conditions and a good immune system they can ward off some parasites, and to have just a couple is natural. They maybe a bit itchy sometimes just like a dog, but when they are constantly doing it something needs to be done.
     
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  3. fishorama

    fishorama AC Members

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    Flashing can be from any irritation. How long have you had them? What are your water parameters for ammonia, nitrite & nitrate? What test, if any did you use?
     
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  4. Taylor Price

    Taylor Price AC Members

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    I think I see some ich on them now, how should I treat it?
     
  5. the loach

    the loach AC Members

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    Which species of cories are they? If they (and the other inhabitants) can take 86 degrees you could raise the temperature. With catfish and other sensitive fish I would use Herbtana, it's a safe herbal product that works against other parasites as well.
    Then there are a whole bunch of other products on the market against ich, but not all are safe for catfish and shrimp. Some that will also stain sealant.
     
    #5 the loach, Dec 28, 2018
    Last edited: Dec 28, 2018
  6. Taylor Price

    Taylor Price AC Members

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    3 sterbai corydoras and 3 peppered
     
  7. fishorama

    fishorama AC Members

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    I'm old school & prefer a dye ich treatment like methylene blue. Salt can work too. Higher temps speed the ich growth cycle; but unless you go very high (91F+)it won't actually kill the ich & may stress the heck out of your fish.

    Ich is very treatable if caught early & treated well & consistently with lots of water changes. Good luck!
     
  8. the loach

    the loach AC Members

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    Temperature treatment will be very uncomfortable for your cories as well as salt. Methylene blue is something for a hospital tank as it will also affect nitrifying bacteria, plants, sealant...
    Get a safe commercial product. If you have a hospital tank but no medication on hand separate the affected cories as soon as possible or are there no other fish in the tank just the shrimp?
     
  9. Taylor Price

    Taylor Price AC Members

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    I have a Betta, some raspbora Hets, a clown pleco, and some snails also
     
  10. Taylor Price

    Taylor Price AC Members

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    Question: could I move all of my fish to a separate tank to treat with methylene blue and salt treat their tank to kill anything in there? I also saw take out the heater and filter for a few hours because ich can’t survive out of water.
     

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