Jump to content

Refusing to moult.

revolutionhope

By revolutionhope
in Shrimp Health & Care

 Share

Recommended Posts

revolutionhope Shrimp Master

revolutionhope

Posted
Posted

Hey shrimpers!

I'm hoping to get a list of possible reasons why a saddled female shrimp would refuse to moult? I have a suspicion what might be the reason for this occurring in my specific situation but don't want to bias anyone's feedback so I'll hold off giving any details for now.

Eagerly anticipating any input, thanks in advance!

Love n peace

Will

Link to comment
Share on other sites
larrymull Shrimp Lover

larrymull

Posted
Posted (edited)

Kind of experiencing this in one of my tanks as well. My reasons are lack of calcium, GH too high, and other WP are off.

Edited by larrymull
Link to comment
Share on other sites
Disciple Shrimp Master

Disciple

Posted
Posted

I agree with Larry.

It would be some kind of WP issue. Most likely to do with the GH. What is the TDS, GH and Kh?

Could also be temp.

Also knowing shrimp as soon as you ask about it they moult and become berried.

Link to comment
Share on other sites
revolutionhope Shrimp Master

revolutionhope

Posted
  • Author
Posted

Thanks for the input guys :-)

Ill give some more detail i guess - the media and gravel and moss etc is well established and the tank has correct gh, kh, temperature is constantly between 23-25C, Im using ro water with ss gh/kh+ (cherry shrimps).

Effectively did an 80% water change approx 3 weeks ago when the shrimps were moved to new aquarium (very large one). One berried lady held on to most of her berries and other saddles continues to develop but are as big as they can get i believe. (The berried lady has been gradually dropping the berries but this has always been the case with my ycs since i got them in feb last year).

Any creative suggestions will definitely be welcome :-)

Link to comment
Share on other sites
Disciple Shrimp Master

Disciple

Posted
Posted

I have always heard Yellow will breed like mad then after awhile they slow down.

Btw have you checked your nitrates? or ammonia?

Link to comment
Share on other sites
  • 7 months later...
  • 2 weeks later...
revolutionhope Shrimp Master

revolutionhope

Posted
  • Author
Posted

Just found this! Wasn't notified due to my silly settings!

I tried loads of things to get them to breed. In the end I moved them to a crs tank where a number of them got berried but sadly no shrimplets ever materialised. :-(

I've decided that the line I had was an extremely fussy one. I'd like to try to breed this particular line again one day as they were a very bright yellow. If i do try again and still have no success I think I would resort to obtaining some females from somewhere else and breed the males from this line with them... one day maybe .. one day ...

Love n peace

Will

Link to comment
Share on other sites
Zoidburg Shrimp Breeder

Zoidburg

Posted
Posted

Although in the USA, I've heard of some people buying the painted black gravel from Petco and not being able to get their shrimp to breed. Once the crappy inert gravel was replaced with something else, the shrimp bred just fine.

  • Like 1
Link to comment
Share on other sites
revolutionhope Shrimp Master

revolutionhope

Posted
  • Author
Posted

That's interesting@Zoidburg . My gravel isn't a problem but they did start breeding in the crs tank with substrate so maybe there's something in that?

I do know this colony I got my stock from was kept in a rack with substrate..

Link to comment
Share on other sites
Zoidburg Shrimp Breeder

Zoidburg

Posted
Posted

Just some thoughts then....


Maybe find out what type of substrate the shrimp were kept on and what the water parameters are? Might be crazy, but even go as far as using the same remineralizer, if that's what the breeder uses? (if not tap water?)

 

Basically, trying to match what they came from.

Link to comment
Share on other sites
revolutionhope Shrimp Master

revolutionhope

Posted
  • Author
Posted

Cheers@Zoidburg I did try my best to match parameters and they did get berried but I had no shrimplets survive. My ycs being in a tank fairly well stocked with CRS might not have helped though. If the exact same substrate is what was missing I'd be surprised. Pretty sure he was using ADA substrate and im using cal aqua black earth premium so not the same substrate but anyhow..

If the shrimp was so fussy they only breed well in his substrate then I think the line needs some new blood added for sure.

Love n peace

Will

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
 Share
Go to topic listing

  • Join Our Community!

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

  • Must Read SKF Articles

    Shrimp Disease and Treatment
    Tibee, Taitbee, Pinto, Mischling, F1, F2

  • Tropical Fish Forum
    Discus Breeding Guide
    Discus Disease and Treatment Guide

  • Posts

    • ngoomie
      Shrimp and meds containing gentian violet

      By ngoomie · Posted

      Alright, I've done a bit more research on gentian violet's cancer-causing potential but I haven't yet done research on malachite green's to compare. But from reading the California propositon 65 document about GV (North Americans incl. some Canadians will recognize this as the law that causes some products they buy to be labelled with "known to the state of California to cause cancer", including the exact product I bought) it seems that the risk of cancer is related to internal use, either injection or ingestion. Speaking of ingestion, I think GV bans mainly relate to its use in treating fish/shrimp/etc. which are intended for human consumption, because of the above. And in countries where GV isn't banned for this purpose, it does seem to get used on various species of shrimp without causing any issue for the shrimp themselves (at least enough so for shrimp farming purposes). See the following: In February, the FDA Began Rejecting Imported Shrimp for Gentian Violet and Chloramphenicol (2022 article by Southern Shrimp Alliance) FDA Starts New Calendar Year by Refusing Antibiotic-Contaminated Shrimp from Three BAP-Certified Indian Processors and Adding a BAP-Certified Vietnamese Processor to Import Alert (2024 article by Southern Shrimp Alliance) Southern Shrimp Alliance and some other organizations have tons of other articles in this vein, but I'd be here for a while and would end up writing an absolutely massive post if I were to link every instance I found of articles mentioning shrimp shipments with gentian violet and/or leucogentian violet registering as contaminants. That being said, I know shrimp farmed for consumption and dwarf shrimp are often somewhat distantly related (in fact, the one time a shrimp's species name is listed that I can see, it's the prawn sp. Macrobrachium rosenbergii, who at best occupies the same infraorder as Neocaridina davidi but nothing nearer), but this at least gives a slightly better way of guessing whether it will be safe for aquarium dwarf shrimp or not than my bladder snail anecdote from the OP.
    • sdlTBfanUK
      Shrimp molting before eggs are hatched

      By sdlTBfanUK · Posted

      I would hazard a guess that perhaps those eggs were unfertilized and thereby unviable? Did the eggs change colour, usually yellow to grey as the yolks used up, or any eyes in the eggs. Is your water ok, using RO remineralised and the parameters in range, as I have heard others say that if the water isn't good it can 'force' a molt? How is it going overall, do you have a good size colony in the tank, you may have reached 'maximum occupancy' as a tank can only support so many occupants.
    • beanbag
      Shrimp molting before eggs are hatched

      By beanbag · Posted

      Hello folks,  The current problem I am having is that my Taiwan bee shrimp are molting before all their eggs have hatched.  Often the shrimp keep the eggs for 40+ days.  During that time, they lose about half or so, either due to dropping or duds or whatever.  Shortly before molting they look to have about a dozen left, and then they molt with about half a dozen eggs still on the shell.  Then the other shirmp will come and eat the shell.  These last few times, I have been getting around 0-3 surviving babies per batch.  I figure I can make the eggs hatch faster by raising the water temperature more (currently around 68F, which is already a few degrees higher than I used to keep it) or make the shrimp grow slower by feeding them less (protein).  Currently I feed Shrimp King complete every other day, and also a small dab of Shrimp Fit alternating days.  Maybe I can start alternating with more vegetable food like mulberry?  or just decrease the amount of food?
    • ngoomie
      Shrimp and meds containing gentian violet

      By ngoomie · Posted

      Yeah, cancer risk was a thing I'd seen mentioned a lot when looking into gentian violet briefly. I kinda just figured it might only be as bad as the cancer risk of malachite green as well, but maybe I should look into it more. I've been doing a pretty good job of not getting it on my skin and also avoiding dunking my unprotected hands into the tank water while treating my fish at least, though. Maybe I'll just not use it once I'm done this course of medication anyways, because I know a store I can sometimes get to that's pretty distant carries both malachite green and methylene blue, and in pretty large quantities.
    • jayc
      Shrimp and meds containing gentian violet

      By jayc · Posted

      Can't help you with Gentian Violet, sorry. It is banned in Australia violet for potential toxicity, and even possible cancer risks. I thought it was banned in Canada as well. At least, you now know why there isn't much info on gentian violet medication and it's use. But keep an eye on the snails after a week. If it affects the snails, it might not kill them immediately. So keep checking for up to a week. Much safer options out there. No point risking your own life over unsafe products.
×
×
  • Create New...