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    • sdlTBfanUK
      By sdlTBfanUK
      Moderators City: Inner West, Sydney AU Interests: Shrimp, cars, fish, Computers, Cycling/Bikin Posted September 27, 2013 (edited) With the wealth of knowledge from experienced keepers here in SKF, we should have a repository of Shrimp Diseases where people can come to diagnose and hopefully find a cure to their shrimp's ailment.

      Just like in the world of aquatic fish keeping where identification and diagnosis of diseases in fish and known cures are part and parcel of every aquatic forum, so should we have one for shrimp.

      Vorticella

      I'd like to start this database off with the not so uncommon Vorticella parasite which looks like White fungus or mould growth on the shell of the shrimp.
      Vorticella is actually a protozoa of 16 known species, not a fungus at all. Vorticella are aquatic organisms, most commonly found in freshwater habitats. They attach themselves to plant detritus, rocks, algae, or animals (particularly crustaceans).
      Vorticella are heterotrophic organsims. They prey on bacteria. Vorticella use their cilia to create a current of water (vortex) to direct food towards its mouth.
      Typically, Vorticella reproduce via binary fission. The new organism splits from the parent and swims until it can find something on which to anchor itself.

      If left untreated, vorticella have been known to cause the death of the shrimp it was attached to.

      Here are examples of what it looks like.
       

       

       


      Known cures: Salt bath with aquarium salts. Be careful not to use table salt with Iodine.
      Dosage: 1 teaspoon to 1 cup of clean tank water (not tap water).
      Duration: 30sec to 1 minute. You might need to repeat this a couple of times until the vorticella disappears, so keep the infected shrimp in a breeder or hospital tank (could be another cup of tank water).
      Possible causes: Poor water conditions. Increase water change frequency.

      Low doses of the salt bath have been know to be ineffective.
      Ick and fungus cure meds don't work on Vorticella.
      Seachem Paraguard could work as well at the full recommended dosage, since this is a parasitic med. But Seachem have admitted Paraguard isn't invertebrate safe. So only try paraguard as a last resort and drip it into the tank premixed from a bucket of tank water slowly .

      This treatment is in no way a replacement for good tank husbandry.
      So keep up with your water change routines, and removal debris and uneaten food.

      Please add if you know of more diseases, how you cured it, what you tried that worked and what didn't work.

      Cheers.
    • Dimos
      By Dimos
      Hello!
      I started having some weird parasites in my 10g shrimp tank. I first saw some long and flat worms (maybe detritus worms?)  https://www.aquarium-pond-answers.com/2007/03/trematodes-and-nematodes-in-fish.html.
      Now I see some weird creatures that look like small shrimps (about 5mm long) with shorter antennas and legs, please take a look at the video:
      https://www.dropbox.com/s/q7w9p60lzgr6hji/IMG_9513.MOV?dl=0
      Do you have an idea of what they could be, whether they are dangerous for my cherry shrimp, and how to get rid of them? Could it be Gammarus pulex?
      Many thanks in advance!
      Dimos
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    • jayc
      You are into experimental territory now.  There are lots of meds for ich, lice, anchor worm, etc.  This parasite might be internal (within the body), and any meds designed for external application might not work. An unfortunately, any meds designed for internal parasites are targeting worms, which might also be ineffective against this parasite. Be careful that these meds don't affect your shrimp as well.
    • beanbag
      Just to update:  I checked some molt shells of some blue bolts and golden bee that don't have this short antenna problem - no bugs I check an old, adult RWP in the tank which currently has this problem.  It's antenna are still long, but seems "unhappy" and not eating ever since this last molt - lots of bugs in shell, plus molt shell has a red tint to it.  May be some sign of sickness, as usually my RWP molt shells are perfectly clear. I'm thinking I need some kind of anti-(internal?)parasite med to treat this.  Any suggestions? 
    • beanbag
      yes, it's the shed shells. now that I think about it, I also remember in the video the bugs were clear, and I have seen clear ones before too, a long time ago.  But these recent ones were dark colored. So I have two tanks.  In one of them, where I normally have this problem, I have been dosing antibiotics.  The short version is that most of the shadow panda and RWP shrimp have got this disease, but they haven't died either.  But they don't recover either.  They just simply stop growing and stay at a small size with stumpy short antenna.  The first shadow panda that got this problem is still alive maybe 2-3 months later. In my other tank which often doesn't have this problem also got it, but it seems to have hit harder, where both "almost adult" shadow panda suddenly got it and died within a few days.  Antibiotics didn't save them.  It's too weird - it seems like this problem comes on suddenly, with no trigger that I can think of.  (besides "the weather was warm and I ran the air conditioned".  This doesn't actually affect the water temperatures since I have a chiller, but maybe something blew into the tank?)
    • sdlTBfanUK
      Sorry for the delay, I have been searching on here and the wider web but cannot find what you are referring too! I do know which video you are talking about and remember seeing it. The video was of a shed shell rather than a live shrimp! Are you seeing them on live shrimp? From memory I don't think it was anything to worry about and I very much doubt it would discriminate between different colours of shrimp, but was probably nothing to worry about and just part of the life in aquariums, like detritus worms and other life forms. I think they were colourless in the video, if my memory is any good? Are you still getting shadow panda deaths?
    • beanbag
      Hello folks, I remember reading about this a few years ago but for the life of me cannot find this info / thread again. Can somebody point me to a link for this info? I forgot the forum I saw it on. There was a discussion about how if you look at a shrimp molt shell under a microscope or loupe, sometimes you can see tiny "bugs" or whatever moving around inside. At that time, I think the conclusion was that maybe it was a symbiotic relationship because it even happened with healthy shrimp. But I can't remember if this occurred only in neocaridina or caridina also? I just happened to look at a shadow panda's (caridina) shell who is sick with the "shortened antenna disease" that I always complained about. There were tiny blue/black spots moving around inside.  I also looked at the molt shells of some blue bolts that don't have this problem, and there were very few, or none, spots moving around inside the molt shell. I wonder if this could be some symbiotic relationship gone wrong and is the actual (proximate) cause of the problem.  (Since antibiotics didn't really seem to work) In that case, I would need some kind of anti-parasite medication to cure the shrimps.  What are the typical internal anti-parasite medications for shrimps?
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