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- Yesterday
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Breeding and culling process
pastu replied to revolutionhope's topic in General Questions/Discussions
Going back to culling , i would like to point out that removing too large a proportion of the colony you wish to improve , gets your there faster , but you reach a point of no further progress for lack of genetic variability. I tend to cull the worst 20% of my colony once a month and observe a slow steady improvement. Hopefully my colony will continue to improve Long into the future. I have learnt about population genetics when i was interested in breeding fancy fowl, and kept up to date now that i am interested in shrimps and horses. The laws are the same.the greater the breeding population and the lower the percentage that is removed from reproducción, the healtier and more prolific will remain and the further the progress in recombining desirable caracters. A severe rate of culling makes your population very homogenous early on and improvement stops -
I'm still new to the hobby but they kinda look like other post (could be wrong, but he called them glass shrimp) https://r.tapatalk.com/shareLink?url=https://skfaquatics.com/forum/topic/11301-what-kind-of-shrimp-are-these/&share_tid=11301&share_fid=50791&share_type=t For the last pic it looks like a pinocchio shrimp (Caridina gracilirostris). Maybe someone will correct me. Sorry couldn't help anymore. Sent from my 2PZC5 using Tapatalk
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Newer A/C units now have auto on/off features. Maybe it's time for an upgrade @Zoidburg 😁 The things we do for our shrimp!
- Last week
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I really enjoy cycling a tank from zero. Find fascínating the invisible process seemingly Out of the blue , where ammonia rises, leaching from the substrate ( always use Ada amazonia or help shrimp substratos) then ammonia turns into nitrite and those two dissapear and you are left with nitrate, al i had to do was wait, i also use seachem matrix or pondguru,s ultimate and that ends Taking Care of nitrate too.
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I think it might help to understand what water parameters you already have and what substrate. As far as the bird mineral blocks go? They should, in theory, be okay, however I'd be concerned about the metal that's in many of them. The metal that's meant to be tied to the bird cages. Wouldn't personally use it, because if extra calcium was required, I'd just add it from a remineralizer or get some form of calcium in another form to add to the tank.
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update Taiwan and pinto tank go very well, i have 80+ babies... But they are grow very slow. Crs are over polulation on two 100lt tanks Cbs are 200+ from 4 shrimps that i start. f1 tibee x pinto , tibee x crs, tibee x cbs There is bad thing i have 20 tanks , and i dont have a space for shrimps.
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They don’t appear to be lethargic, and are still grazing. The symptoms are the discolouration and two deaths. Shrimps have been in this tank for 25 days.
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Phew! Funny how the conversation started off as something completely different, id'ing worms, to something that lead to identifying a possible issue with the health of the tank. Go Team!
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Bloody mary are not a grade of shrimp, but a color, just like blue dreams and chocolates. They may have their *OWN* color grading, but I haven't seen much in regards to a specific grading for them. That said, a high grade bloody mary is likely to have solid red legs and dark coloration. FR/PRF are opaque shrimp that you can't see through. BM glow like a ruby and it can be difficult to get their true colors to appear in pictures. It's easiest to appreciate them in person. There is no "blue" cherries, but there are many blue varieties... and trying to define the blues is a headache.... for example, Blue Velvet in the USA are supposed to be Blue Bodied Red Rili's without the red coloration but babies may show some red when they are young. Imported Blue Velvets on the other hand come from the black line. Many blue diamond shrimp may be blue shrimp that may or may not have carbon rili coloration, but they are not blue carbon rilis. Blue carbon rilis are a lighter blue in coloration. Blue Dreams are usually without black coloration. I'm not entirely sure how imported Blue Velvets fit in here... unless they are actually Blue Dreams by another name. It gets really confusing, especially when you come across shrimp labeled as "Dream Blue Velvet" or "Blue Dream Diamond". Like, which is it? And there are these charts here.... but I don't know how accurate they are. Further DNA analyse may be required to determine if all shrimp currently labeled as Neocaridina davidi are actually one species or if they might be separate species In short, there is no world-wide grading for all the different colors. The only thing everyone can agree on is the grading system for low grade cherries to high grade cherries - aka Painted Fire Reds... and what a bloody mary is, a chocolate, a carbon/black rose, a rili (pattern type) and..... that's about it. There are at least 3 different names for different yellows, at least two different types of oranges (and I hate the name given to one orange type!), at least two types of greens (I'll never be able to think of green jades without also thinking about one with ellobiopsidae/green fungus but seller swearing USA bred shrimp not from imported stock and it's berried.... oh, and seller is a fish vet? supposedly certified, but seems self proclaimed... -shrugs-), who knows how many varieties of blues... and some people will sell low grade blue of one variety as a different variety of shrimp... as an example, if Blue Dreams are bred from Blue Diamonds, and someone has a colony of Blue Diamonds, they might sell the culls as Blue Dreams even though they aren't *really* Blue Dreams. You can look up a chart (not sure where it may be here) for grading cherry shrimp, which should be able to give you an idea of how to grade other colors. Back to subject of bloody mary... the best ones I've seen are actually from another member of this forum. Compared to bloody mary from another member.... they are still nice looking shrimp (again, pictures do not do them justice!) but you can tell that they aren't quite as good by at least comparing the legs.
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Just for some closer in case anyone reads this and has the same issue. As per the other post that you linked, seems like you have detritus worms. Not harmful. You don't need to do anything at this stage.
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They need a temp between 78-83 degrees Fahrenheit. Sent from my iPad using Shrimp Keepers Forum
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Nice! Sent from my iPad using Shrimp Keepers Forum
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Very nice!
- Earlier
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Ignore the colour, as Masapi can come in many different colour morphs. But always, the rostrum is very long. And stripe in the middle of the head as Zoidburg mentioned. Try to catch the shrimp and place into a breeder box for photos. Get a close up side shot of it's head.
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Welcome. You will find lots of resources and reading material here. Check out the pinned posts and also those in the Article section. If you are starting out with a new tank, it is very important to cycle the tank properly and getting the parameters right for the type of shrimp you are intending to keep. Again, read the posts/articles here. Don't be shy with any questions you might have. 👍
