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What are these white dots on my crayfish, is it ich


Huero
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Shrimps and Crayfish don't suffer from Ich.

This looks like parasitic Scutariella.

You can read about it in this post along with possible treatments.

 

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    • sdlTBfanUK
      Sorry to hear that! I hope you are getting enough baby shrimps to keep the colony going at a reasonable size?  
    • beanbag
      the short antenna ones eventually die
    • sdlTBfanUK
      Are you getting and unusual shrimp deaths, or is it just the shorter antenna?
    • beanbag
      I don't know if bacteria is the cause.  It seems to be an uncommonly diagnosed problem because most shrimp articles only talk about bacteria infection as "a few shrimp die every day / week"  What can I say, a standard dose of minocycline and erythromycin didn't work to stop it, so not sure if oxytetracycline will work.
    • jayc
      Ah yes. That was the injectable form of oxytetracycline. Each mL of the injectable form contains: 100 mg oxytetracycline HCl, 5.75% w/v magnesium chloride , 6 H2O, 17% v/v water for injection, 1.3% w/v sodium formaldehyde Sulfoxylate as a preservative and q.s. with propylene glycol. Basically, it has additional compositions in it. 1000mg might have been the dose recommended for the injectable oxytetracycline, but if you have the powder form then follow the dosing rates as recommended on your bottle. Hope that clears it up a bit.     As for doxycycline and it's use to treat short antenna ... I cannot comment on whether it will be more effective than oxytetracycline or not. But if you do use it, only try one at a time. Is bacteria even been proven to be the cause of "short antenna disease"?
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