However, I did snap some photos of approx. 2 week old baby CRS! A majority of the offspring from this genetic line come out as SS CRS, very little S+ grades. I'm quite happy with the genetics my SS Crystals carry.
Furthermore, my SSS crown CRS gave birth last night. From what I've seen so far, the babies look to be mostly SS. I am crossing my fingers that there will be some SSS babies here and there.
Photos below are pics of the babies! That's only a couple of the 30~ I counted.
Now, information time!
I want to begin by saying this: Not all CRS are alike! Genetic background plays a HUGE role in these shrimp (and any animal for that matter). What I mean is, if you pick up SS grades from person A and person B is also selling SS grades, it does not mean they are equally the same! Grades and look-wise, they may look similar in terms of patterns. However, a good genetic background will determine which SS CRS is better.
Important things to factor are...
- Hardiness of the genetic line
- Offspring survival rate and phenotypic patterns
- Overall health of the genetic pool. Is it too homozygous or is heterozygosity still thriving in this population?
We can take the earlier scenario for example. Let's make fake scenarios for the two, shall we?
Person A's SS Crystal Shrimp stats:
- Has lived and bred just fine in ph range from 6.4 - 7.6
- Babies DO survive in ph above 7.0 (not a common occurrence in CRS!)
- Baby offspring is averaging at around 80% survival rate
- Most babies come out to be A-S grade, a few SS grade. A percentage of 80% A-S and 20% SS
- Color of the red and white are average.
- New CRS sources have been added multiple times, ensuring heterozygosity in the population's genetics.
Person B's SS Crystal Shrimp stats:
- Has lived and bred just fine in ph range of 6.4 - 7.0
- Baby survival rate averages around 60% - 80%
- Most babies come out as SS grade, a few S grade. A percentage of 70% SS and 30% S grade.
- Color of the red and white is thick and dark.
- Original CRS came from 3 different breeders but have not had any new CRS added then. Depending on how long this population has been going for, heterozygosity might be low. So you are unsure. However, survival rates are not too bad for offspring.
With both of these stats to consider. Which genetic line would you pick?
They have its ups and downs, so choose wisely! It's all a matter of preference, therefore, you should always ask for a genetic background when purchasing shrimp.
As for my CRS, their genetic background are of the following (and these are not made up now):
Original SS Crystals genetics are:
- Lived and breeds perfectly fine in ph 6.4-7.6
- Baby survival rate is at around 70%~
- Above average red and white thickness
- Offspring come out 80% SS grade and 20% S+ grade
- Original owner has had the CRS for approx. 1 year and have been selectively breeding for color. No new CRS were added. I assume heterozygosity in their genetics is not too high but original genes are extremely sturdy as shown in their survival rate and flexible water parameter conditions.
- I have since added 4 SSS CRS to improve genetic variation however.
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