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Kat129

Shrimp dead - looking for advice please.

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Kat129

Hi everyone. 

I am new here so I hope you can help.

I have got a community fish tank that has been running (fully cycled) since the beginning of May. In addition to my fish I added 11 red cherry shrimp. All seemed fine. My shrimp were active, feeding, moulting and a couple of the females were developing saddles. 

2 weeks ago everything changed. I discovered one of my shrimp had a white patch on her. On closer inspection it looked like a hole. All of the shrimp went into hiding and became less active and then they all started dying. Some of them seemed to have the same white patch but some didn't. I removed the bodies of my last 2 shrimp yesterday.

Ammonia and nitrites are 0. Nitrates are between 20 and 30 (they come out of the tap at 20). pH is 7.6. I don't know water hardness but I know we live in a hard water area.

Water changes are 25-30% every week.

My fish are fine. Whatever it is has only affected my shrimp. 

This all started when summer finally arrived in the U.K. and the tank temp increased. Heater is set st 24C but in the heat the tank crept up to over 25C.

I hope someone might have an idea about what has killed my shrimp and how to make sure my tank is safe before reintroducing shrimp.

Sorry for the long post. Thank you all for your help.

 

 

  

 

 

 

IMG_2235.JPG

Edited by Kat129

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jayc

Cannot see the shrimp in the first pic in great detail. Are both pictures of the same shrimp?

Never seen anything like that. It has a pattern that is almost worm like.

Are all the white patches in the same spot?

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Zoidburg

Any possible chance the fish are eating them?

 

 

Temps are on the high end but they wouldn't cause that... unless the shrimp are molting more often, meaning their shells are softer, then the fish go after them? Although that seems rather uniform in size...

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Kat129

They are different shrimp.

The patches seem to appear in roughly the same place. Some of the dead shrimp didn't have them though and some of them have simpy vanished without a trace.

It is very odd.

 

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Zoidburg

Get a liquid GH and KH test kit (i.e. API, Sera, or? must be liquid!), and if you can swing it, a TDS meter. (calibration solution if you want to make sure it's accurate)

 

I don't know how much they cost over there, but here they are pretty cheap. This will help tell us what could be going wrong.

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Matuva

very odd! It looks like something sucked the shell  o.O

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ineke

I have seen fish take chunks out of shrimp if the shrimp is too big for the fish to eat whole. They constantly worry the shrimp , pull legs off etc . Even in the best planted tanks shrimp are at risk. Usually it happens after lights out when the shrimp tend to come out and graze. If you can't find anything else keep that in mind - not many fish are truly shrimp safe which is why I got rid of all my fish in the end ?

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Madmerv

Tend to agree with @ineke there. RCS can get on fine with your fish for a long time but when the fish get hungry, if you forget to feed for a few days, they then become food. Once the fish have worked out that shrimp taste good then they are forever in hiding.

What type of fish do you keep in the community?

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    • Matuva
      White bloom is usually bacterial bloom. I'm especially enclined to diagnose that, considering this happened just after you added some Bacter AE. I don't think this is something crtical, but I understand it can be annoying. Try again a partial water change. If you can, vaccuum the substrate, add Mosura BT-9 if you can find some, or live bacterias such as Bio Nitrivec.
      This problem can clear itself after a more or less long time. In my case, it took 2 weeks in one of my tanks. In another tank, I had to use an UV filter. my .02
    • Robert42
      Hi, I am a newbie to shrimp keeping and I have come here for some stability in information as to looking around the information of various fish forums vary so much. Some say RCS are easy and will thrive in the same parameters as community fish others will say a great deal more care and closer parameter adjustment. All confusing. So I am hoping to get advice that I can work with. I have on order and should hopefully be delivered this week a custom 25cm cube tank (about 10 gal). I have a sponge filter and air pump as well as a heater. My plan is for a planted tank for my red cherries and hopefully some tank mates but I would like them to breed. My water is classed as ‘Moderately Hard’ GHd 9.84 pH7.25 as per suppler analysis.  Talk of using a TDS pen. I can easily order one, but should we not be aware of what constitutes the dissolved solids or does not that matter? Light for the new tank, 6500K or 8000K which would be best for my shrimp to stand out. I keep going on line to order one or the other and end up not ordering anything. Substrate for both shrimp and plants. All I am sure of is I would like it as close to black as possible. The plants I intend would be Java Moss, Java Fern and Anubias nana petite possible water sprite as that can float and go in the substrate. I welcome any suggestions and I will probably have more myself. I am in no hurry to add livestock . Thanks 
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    • richiep
      i have a 225ltr tank which as been running since early November, planted, ph 6.2 temp 22.8 tds 170, i put the first lot of shrimp in early january not had any problems, molting as normal and a few berried. a week ago i put a scoop of bactor AE in and just after that a white mist or bloom appeared in the tank, partial water changes have done nothing to help, all shrimp are fine and water is at the right parameters , anyone have any ideas what this could be?, the filter system is a fluval 306 external, i also have an oxydator, and i dont have anything in the tank thats breaking down cheers richie 
    • s1l3nt
      Hate to barge in on you two... ;) 

      Your welcome JC, anytime bro :) That rack sure has come along but i got one thing to say: BOOOOOOOO! no up to date photos.... Hahaha :D
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