Jump to content

Chocolate (blue) X Blue Pearl


Dead Can Dance

Recommended Posts

Thought yours were blue velvet not blue pearl? Don't know what they'd look like probably yuk like most other crosses lol

Maybe you should try it

Link to comment
Share on other sites

BB said they're technically not blue velvets' date=' from memory.[/quote']

Don't think I said that....I haven't seen/heard of Blue Pearls in Aust. You've probably got the Blue Velvet (or Blue Rilli as it is often referred to). If you blue velvets shrimplets have some signed of red caps/tails...etc...then they're definitely blue velvets, derived from red rill blue body.

Never ever sure with crossed, but as the Blue Velvet's have the "rill" genetics, best possibility will be choc rill, or a variation that's beyond our imagination ? The more hobbyist trying for different variants the better ...

Link to comment
Share on other sites

  • HOF Member

So BB I have only a few chocolates and a few yellows but lots of red and blue rillis would it be OK for me to try and cross them with the rillis or am I just going to end up with wild variants. I have a hankering to take some male yellow and chocolate and put with female rillis. Is it worth a try?

Link to comment
Share on other sites

Really depends on the dominant genes, it could literally be anything from pale brown tiger/wild cherry through to a reinforced blue. Give

it a try and see what happens, thats your best option. It really depends as to whether the blues are on the same gene, it'll be an

interesting cross to carry out regardless.

Link to comment
Share on other sites

I believe blue pearls are Neo zhangjiajiensis and they're nowhere near as nice as the blue velvets IMO :)

Link to comment
Share on other sites

  • HOF Member

Thanks BigD I guess the worst that can happen is a lot of culls. I might give it a try:encouragement:

Link to comment
Share on other sites

In regards to the 'Rilli' gene I'm pretty confident you'll find it across all of the cherry shrimp in Australia. 3 years ago Rilli's weren't

common however occassionally we saw the standard Red Head/White Body Rilli come up, I know I brought one for $50 back then

and was told I was paying stupid money LOL But that had come from a Red Male x Red Female which implies the gene was there,

just dormant.

So whilst we're calling a lot of blues 'Blue Rillis' for my own Blues the head/body is a constantly blue, there is no seperation of

head vs body, have even cross back to a standard red to test with no red/blue body/head shrimplets caming through in any of

the batches. From my perspective that would indicated the 'Rilli' gene is recessive and not dominant but more testing would need

to be done but unfortunately I don't have the tank space to keep this going.

Link to comment
Share on other sites

I agree, for me a blue rilli is blue head with clear body. What we currently call a blue rilli to me is a blue cherry cull. But that's just me. :)

Link to comment
Share on other sites

Dominant or ressesive, the genetic possibilities are there...so why not ineke, part of the intrigue !

Nogi - yes, we do need to make that distinct definition of "rill".... http://www.shrimpkeepersforum.com/forum/showthread.php/1297-Classification-of-Blue-Cherry-vs-Blue-Rillis-vs-Blue-Jelly-Velvet?highlight=blue+velvet

Link to comment
Share on other sites

  • HOF Member

I am going to try a few different crosses with rilli and other colours just for the intrigue as you say BB. I think once my numbers increase and I get a few spare females I will just do it and see what happens. :encouragement:

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

    • ngoomie
      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
      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
      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
      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
      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...