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jayc

Shrimp Diseases and Diagnosis

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kthien

Hi guys, 

Have been having issues with my yellow neocaridina tank this past month, from a berried female death, general inactivity in the past 2 days, to this discolouration in the body (yellow to translucency). I am afraid the colony will collapse soon if I leave as is.

Parameters:

Ammonia 0, Nitrites 0, Nitrates ~5-10

KH: 3 GH: 7

TDS: ~205

Temperature: 23-24

What would you guys diagnose this as? Differential being muscular necrosis?

Help much appreciated, thank you!

 

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sdlTBfanUK

The shrimp in the photo looks more like an orange rili, or was it all one colour and that is your concern?

Have you removed the shrimp for now?

What is the PH of the tank water it was kept in? The other parameters look good!

Do you have some sorrt of filter that aerates the water in the shrimp tank?

Are you feeding your shrimps?

Simon

ps How is/did the egg hatching go??

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kthien

Hi Simon!

It was in fact all one colour, and it's mid-section changed to clear. In general, shrimp activity has diminished significantly with many hiding, lethargic, refusing to eat. It is really noticeable compared to my other tanks and I sense death is imminent..

I have not been able to remove it as I unfortunately don't have another cycled tank for quarantine. It is only in the breeder box for observation currently.

My apologies I forgot to post pH, it is 7.4. 

There is a HOB filter which should provide some aeration, as well as the egg tumblers with air stones.  

I was previously feeding hikari crab cuisine every two days but have since switched to soybean husks since yesterday; so I can leave them in, in case they get hungry. I've noticed none of the shrimp will come to eat and was afraid of fouling/ammonia spiking. Only snails are eating it. I've also made some shrimp kandy feast (awesome recipe jayc) and other tanks will maul it except this one.

The eggs have eyes now! Which coincide with other berried females' eggs, so hopefully they all hatch close to each other 🙂

A friend suggested dosing h2o2 at 0.3ml/L daily, for 1 week. Would you condone this? 

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sdlTBfanUK

You could just quarantine the shrimp in a bucket or other plastic container, if you don't have a seperate tank and if you are going to try H202 that is definitely a better/safer place to do that as just the one shrimp will be at risk instead of all the shrimp and the bacteria etc. I haven't tried H202 treatment so can't advise you on that! I personally wouldn't risk trying that treatment in a main tank!

I hope the eggs do hatch ok, it sounds like that is doing well.

Otherwise it is just a case of trying to identify what may have caused the problem? Is the tank on its own or with the other shrimp tanks? Is it likely that someone used an aerosol near the tank and poisoning the water, shrimps are super sensitive? Did you maybe have something on your hands when you did some maintenance of this tank?

It may be worth doing a 50% waterchange with dripping the new water into the tank. I would do that and quarantine the sick shrimp in a bucket/container as a start.

Simon

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kthien

It's on its own. Those are some good points regarding aerosols, dirty hands etc. as I can't seem to pinpoint any issues with water parameters or obvious pathology/diagnoses. Upon reflection, it's the only tank with an open top, whilst all the other tanks have their own lids. Certainly something to think about..

I also found this red worm in my filter's mechanical filtration, is it harmful at all? 

685e4fa6-d8bf-4764-8528-177565c248d6.thumb.jpg.4210cc9b5cfb1189493631f1a21e2ffd.jpg

Frustrated, I commenced the h202 treatment, but stopped the filter for about an hour. There hasn't been any abnormal activity yet, but will be watching closely over the following days. 

Edited by kthien
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sdlTBfanUK

I realise how frustrating it can be when you can't pinpoint what has/is going wrong!

The only red worm I know of is the bloodworm and they are harmless to shrimps, but if you aren't sure what it is then I would discard it to be safe? I don't know where they come from, any bucket left outside seems to get some in over time here??

Fingers crossed the H2O2 treatment does the job!

Simon

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behodahlia

Hi! I'm new to shrimp keeping, and today I lost two shrimp within a few hours of each other. I went over and the yellow one was on her back, legs kicking wildly, until she died (maybe a half hour later?), and a few hours later the black one did the same thing. Do they look sick? They were only introduced to the tank 3 days ago. We have two other shrimp in the tank (including a pregnant female), and I'm really worried about something happening to them. Yesterday they seemed completely fine: swimming around, sitting on the plants, eating fine.

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Water parameters:

pH: 6.8

Ammonia: 0 ppm

Nitrite: 0 ppm

Nitrate: 5.0 ppm

Thank you for any advice you can give!

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jayc

The most common death is due to water hardness, causing the shrimps problems with moulting.

And this might be the case with these shrimp. For that you will need to test the water's GH and  TDS.

 

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behodahlia

Oh, I didn't think to test that! Thank you, I'll pick up the stuff tomorrow.

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sdlTBfanUK

Did you drip acclimate them to the water over several hours, most newbies don't (me included when I started) and that causes deaths in the first week usually! When changing water in the tank in routine maintenance it is also best to drip the new water in if it isn't a huge aquarium!

I can't see anything obviously wrong in the photo. If you can, also get a KH tester as well as the TDS and GH mentioned by JayC.

I am assuming they are neocaridina (cherry) shrimp. There is this extremely good youtube video I recommend watching;

https://www.youtube.com/watch?v=8pO6iJPbmdk

Simon

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behodahlia

I did not drip acclimate them; that was probably at least part of it, huh? Good to know about dripping in the water during maintenance as well! Unfortunately, over the night, the remaining two shrimp died as well 😞 It's very disappointing, but I've learned a lot and I know a lot of what to change for the future batch. They are neocaridina, and that video was very helpful, thank you!! I've watched shrimp keeping videos before, but that was the most thorough and easy to understand, so I appreciate it 🙂 I will definitely also get KH/TDS/GH testers in addition to the pH/ammonia/nitrite/nitrate I already have.

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behodahlia

Okay, an update: my fiancee pointed out that all of the dead shrimp have bright pink/orange internal organs, which they did not have previously. After a brief google search, it could potentially be some sort of disease? If so, do I need to dump the entire tank before starting a fresh cycle? It's a planted tank so it'd be a bit more of a pain to drain I would think. Now I'm thinking, if it isn't the drip acclimation problem or the water hardness (so many potential issues), the new shrimp may have been infected and passed it on to the older shrimp.

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Edited by behodahlia
Got better pictures
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jayc
2 hours ago, behodahlia said:

it could potentially be some sort of disease?

Not necessarily a cause of disease.

When shrimp die, they loose the pigment under the shell turning them an orange like when you see when you cook prawns to eat. 

The colour you see on shrimp is under the shell (notice when they moult, they don't loose colour), and when this colour pigment is destroyed, they turn orange.

What you are seeing is normal for a dead shrimp. But if you see a live shrimp with pale orange internals, than that could be an internal infection caused by disease.

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behodahlia

Oh I see! That makes sense. Thank you so much for your help 🙂

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jayc
10 hours ago, behodahlia said:

Thank you so much for your help 🙂

No problem, but that doesn't explain your shrimp deaths. Those addition water parameters we asked for will help us narrow it down.

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  • Posts

    • jayc
      No problem, but that doesn't explain your shrimp deaths. Those addition water parameters we asked for will help us narrow it down.
    • behodahlia
      Oh I see! That makes sense. Thank you so much for your help 🙂
    • jayc
      Not necessarily a cause of disease. When shrimp die, they loose the pigment under the shell turning them an orange like when you see when you cook prawns to eat.  The colour you see on shrimp is under the shell (notice when they moult, they don't loose colour), and when this colour pigment is destroyed, they turn orange. What you are seeing is normal for a dead shrimp. But if you see a live shrimp with pale orange internals, than that could be an internal infection caused by disease.
    • behodahlia
      Okay, an update: my fiancee pointed out that all of the dead shrimp have bright pink/orange internal organs, which they did not have previously. After a brief google search, it could potentially be some sort of disease? If so, do I need to dump the entire tank before starting a fresh cycle? It's a planted tank so it'd be a bit more of a pain to drain I would think. Now I'm thinking, if it isn't the drip acclimation problem or the water hardness (so many potential issues), the new shrimp may have been infected and passed it on to the older shrimp.
    • behodahlia
      I did not drip acclimate them; that was probably at least part of it, huh? Good to know about dripping in the water during maintenance as well! Unfortunately, over the night, the remaining two shrimp died as well 😞 It's very disappointing, but I've learned a lot and I know a lot of what to change for the future batch. They are neocaridina, and that video was very helpful, thank you!! I've watched shrimp keeping videos before, but that was the most thorough and easy to understand, so I appreciate it 🙂 I will definitely also get KH/TDS/GH testers in addition to the pH/ammonia/nitrite/nitrate I already have.
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