Jump to content

CRS not breeding


Recommended Posts

Hi All,

Tank has been up and running for a good 6/7 months , i had an issue where i had to swap them to another tank and they've only recently went back into there original tank.

I've managed to get one set of crystal red shrimp some how but lately there has been no breeding activity at all, can't even see the females with her eggs.

The only issue with my parameters is that the tds is close to 170, i've recently just removed about 5/6litres and started to drop demin water back into the tank to lower the tds.

Am i missing anything or does anyone have any tips that could help?



Edited by herrwibi
  • Like 2
Link to comment
Share on other sites

Did the first set of babies from the CRS thrive/survive or did any die off?

Caridina can stop breeding in certain areas of the world in winter, I had this, where are you based? I think it is to do with atmospheric preasure, not temperature!

The only other time I had problems of this type with breeding was before I started using remineralised RO water, but was using tap water, I occassionally got a few babies but they died within a few weeks, and adults didn't last long either?

Are you sure you have both male and female shrimps in the tanks, they have to be around 6 months old to breed I believe!

The TDS isn't that far off ideal that I would think that would be a problem. Caridina are a lot more delicate than neocaridina so they have to be settled and unstressed as well as ideal water parameters so moving them between tanks could also cause them to pause breeding until they settle down again. 

Do you have a full set of water parameter figures PH/TDS/GH/KH, nitrate, nitrite, ammonia? When you did the treatment in the tank you might have upset the 'cycle'?

Are you using CO2?

Sorry for the slow reply. 


Edited by sdlTBfanUK
  • Like 1
Link to comment
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Join Our Community!

    Register today, ask questions and share your shrimp and fish tank experiences with us!

  • Must Read SKF Articles

  • Posts

    • sdlTBfanUK
      I agree with  crabby, having fish in a tank tends to draw the eye away from the shrimp, and of course the shrimp won't be out and about quite so much! If you can resist the urge to get fish (for now at least) except a few ottocinclus (they don't move that much) that would be best and give your shrimp colony a better chance of growing quicker, but obviously the final decision will be yours! I have fish (tetra) in my oldest tank mainly as that tank is 5 or 6 feet from where I normally sit so wanted something I could see from a distance. I have rasbora and killie in the specialised shrimp tank because I was having difficulty with shrimp in that tank anyway and covid started so I quickly grabbed some fish before lockdown etc so there would be something in that tank - I am thinking I may try and get some taiwan bee shrimmp for that tank next week, before winter gets here, though whether it will work tankwise or with the fish???????????????   Simon
    • Crabby
      I’ve never kept shrimp with tetras, so I can’t speak from experience on that one, but I can say that I’ve found shrimp are more enjoyable without fish in the tank (through recent exploration). Maybe an Ottocinclus or two (or three even) could be an unobtrusive addition? They’re one of the best ‘suckers’ out there. Very cute too.
    • Hammy
      Thanks for the advice yeah everything is going good I’ve got 7 shrimp left one that’s carrying eggs and another that got a yellow patch just behind her saddle so I’m thinking that she’s going to produce eggs soon. Sadly no the cherry coloured one died absolutely no idea as to why it was fine swimming about eating when I went to bed and in the morning it was dead. The baths worked I think I’ve not seen any signs to say otherwise and I give them a good check every day so soon as I see anything I can hopefully sort it. 
    • sdlTBfanUK
      I keep ember tetra and eon tetra with bloody mary red shrimps and that works fine, though the tank is densely planted, and most of the shrimp have reverted to boring wild colour now. I exect the fish get some of the newborn shrimp should they come across them though, so the tank should be well stocked with plants/moss/hiding places. Dwarf Corydora should also be ok with shrimps. Snails are ok as well! I also keep wild type cull shrimp (from the bloody mary tank) with dwarf (mosquito) rasbora (and a killie) and they seem to be ok together but again it is a densely planted tank and the shrimps are very difficult to see, being clear and/or brown! Again though I expect the fish will eat any small/baby shrimps if they come across them. I wouldn't recommend guppies as they have quite large mouths and will go everywhere in an aquarium whereas rasbora/tetra prefer mid to top of an aquarium! The brighter the colour of the shrimp the more likely they are to be seen by the fish and if the shrimp are small enough they are likely to be preyed upon. With your dark blue shrimp and dark subsrate I think you will be ok, how many shrimp do you have left and is the berried one still doing well? Has the salt treatment been successful? Simon
    • Hammy
      Hey just thought I’d check in and say hi I’ve got a new tank cycling and I have some shrimp that’s going to be going into it but I was wanting to get something else to go into it I was thinking about some little tetras what is your thoughts also I would like to get a couple of suckers don’t know any proper names that’s just what I call them. If anyone has any advice I would love to hear thanks in advance 😁
  • Create New...