Jump to content

How to grade CBS that exhibit brown colouration?


Heavyd

Recommended Posts

This is something that I have been wondering for a while. How do you grade the CBS that are more brownish than black. I have received them in the past, and have some now as well.

Are they graded as low-grade CBS? i.e B-grade or lower irrespective of pattern and colour intensity? Or do you grade them for what they are and include that they are brownish?

Just curious on what everyone's thoughts are. I prefer the solid black CBS, but I cant say the brown ones are ugly to look at. I just try to separate the ones with brown colouration into a different tank.

Cheers,

D

Link to comment
Share on other sites

IMO the brown CBS are low grade CBS, geneticially they're a mix, and not true to striving towards PRL/PBL's ..... depending on your level/stage of shrimp keeping, most serious breeders, and hobbyist that are striving towards the international/high grades will consider them as cull....BUT, many who are starting this hobby would no doubt love to have em.....

Link to comment
Share on other sites

Yes I agree about them not being in line to achieving PBL, but is it known for certain that they are the product of CBS x CRS? Or are they just poorly coloured CBS? i.e Less solid Black that looks brown because it isn't as solid?

I separate them from the solid black CBS as the brown isn't something I'm trying to enhance.

Link to comment
Share on other sites

I'm no genetic expert...I think it's to do with the % of red recessive genes ? I use to have a small colony 2+ years ago, and noticed that they could not achieve a strong white shell...

Link to comment
Share on other sites

  • 2 weeks later...

There are some nice browns out there

browncrs.jpg

Would you pay less than $25 for this?

There are ofcourse some less appealing browns but nice browns always exist.

Here is one of mine and I have no intention of ever selling it either.

IMG_5440.JPG

I am still confused as to why browns appear in the colony. I do not think it is simple as a mix of red and black genes.

That would be like saying "I get sunkist from a fire red and yellow cherry"

But i would like to know the answer to this.

I think they are less desirable because it is difficult to keep a line of brown shrimp.

If browns had their own line, im sure their demand would go up exponentially.

Link to comment
Share on other sites

I think that the Brown traits in crs/cbs is still very unstable, I have heard on other overseas forums that people have tried to further the colour but have given up over time. but it would be an interesting line breeding project, how I am uncertain, As i have shown with my cherries, that if you continually inbreed that the shrimp eventually turn back to the "wild type"colouring.

Wonder if anyone has seen the wild colouring of cbs/crs in recent years?. Now that might be an interesting exercise.Good luck and keep trying, thats how our shrimp eventuated in the first place. you never know what is around the corner.

Link to comment
Share on other sites

personally i see browns as culls but each to their own! if anyone would like to take my browns away from me i would happily sell it away :)

but yes you could get some amazing colours as brown but the name is after all crystal black shrimp.....again each to their own opinion on this particular issue

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

    • beanbag
      Update to say that after a few gravel vacs, front wall scrub, moss / floating plant trim, that the condition seems to have improved.  My current theory is that it is due to waste / debris management, where "stuff" like that brown mulm accumulates in the substrate and behind the HMF filters.  Maybe some tanks can somehow deal with it, but mine can't.  Also another experienced shrimper suggested that maybe those "shell bugs" don't just live on the shrimps but also in this debris.  Maybe this is the reason some tanks fail due to "old tank syndrome" where all they need is a good gravel vac? Also, I am guessing that plant trim helps too because now more of the nutrients and light go into growing algae instead of more plants? Well anyway for this tank I will try weekly water change and monthly gravel vac / plant trim.  For my next tank, I'm thinking of something like an under-gravel system where this mulm can fall down and I vac it out.
    • sdlTBfanUK
      Good to have an update and good to hear you are getting shrimplets, so hopefully your colony will continue and you may not get to the point where you have to cull some to stop over population. These type of shrimp only live 12 - 18 months so the adult deaths may be natural? If you have the time I would do weekly 25% water changes, adding the new water via a drip system and do some vacuuming clean of the substrate each week, even if only a different bit each week! See if that helps in a few months and if it does then stick with that regime? It should help reduce any build-ups that may be occuring!
    • beanbag
      Hello again, much belated update: The tank still has "cycles" of 1-2 month "good streaks" where everybody seems to be doing well, and then a bad streak where the short antenna problem shows up again, and a shrimp dies once every few days.  I am not sure what causes things to go bad, but usually over the course of a few days I will start to see more shrimp quietly standing on the HMF filter, and so I know something is wrong.  Since I am not "doing anything" besides the regular 1-2 week water changes, I just assume that something bad is building up.  Here's a list of things that I've tried that are supposed to be "can't hurt" but didn't prevent the problem either: Dose every other day with Shrimp Fit (very small dose, and the shrimp seem to like it) Sotching Oxydator Seachem Purigen to keep the nitrates lower Keeping the pH below 5.5 with peat Things that I don't do often, so could possibly "reset" the tank back to a good streak, are gravel vac and plant trim, so maybe time to try those again. One other problem I used to have was that sometimes a shrimp would suddenly stop eating with a full or partially full digestive tract that doesn't clear out, and then the shrimp will die within a few days.  I suspected it was one of the foods in my rotation - Shrimp Nature Infection, which contains a bunch of herbal plant things.  I've had this in my food rotation for a few years now and generally didn't seem to cause problems, but I removed it from the rotation anyway.  I don't have a lot of adult Golden Bees at this point so I can't really tell if it worked or not. Overall the tank is not too bad - during the good streaks occasionally a shrimp will get berried and hatch babies with a 33-50% survival rate.  So while there are fewer adults now, there are also a bunch of babies roaming around.  I guess this tank will stagger on, but I really do need to take the time to start up a new tank.  (or figure out the problem)
    • jayc
      If that is the offspring, then the parents are unlikely to be PRL. I tend to agree with you. There are very few PRLs in Australia. And any that claim to be needs to show proof. PRL genes have to start as PRL. CRS that breed true after x generations doesn't turn it into a PRL. Neither can a Taiwan bee shrimp turn into a PRL despite how ever many generations. I've never seen a PRL with that sort of red colour. I have on Red Wines and Red Shadows - Taiwan bee shrimps. So somewhere down the line one of your shrimp might have been mixed with Taiwan bees and is no longer PRL. It just tanks one shrimp to mess up the genes of a whole colony. 
    • sdlTBfanUK
      Sorry, missed this one somehow! The PRL look fantastic and the odd ones look part PRL and part Red wine/Red shadow in the colour. They are still very beautiful but ideally should be seperated to help keep the PRL clean if you can do that.  Nice clear photos!
×
×
  • Create New...