so, as some of you know, i have been setting up some odd breeding methods. i recently purchased some of soothingshrimps malawa shrimp so i can start with something closer to a wild type. while i was at it though, i found something that changes the way shrimp display genetics. more on that in a minute.
so, here are some pics of what i have in a tank i set up for multiplying my shrimp. its the same tank i set up with a log and some of my crazy algae. it is amazing for shrimp. anyway, on to some pics...
this pic shows a couple malawa shrimp, which look blueish in real life, and some cherry shrimp. as a result of a test i did, the cherry shrimp are of lower quality than what i started with, but they are now showing three distinct color morphs. one of which is the slightly brighter male in the upper right portion of the group in the first pic. there is a single small female that is quite a bit brighter, and i hope to put the two together and see if i can breed a new strain from them.
these are some pics to show the variety of colors displayed by the malawa shrimp. it also shows one of the three cherry shrimp morphs. the larger female cherry shrimp in the top pic has more of a wine color, hinting at purple. i took a close look and it has quite a bit of blue in it. the ones that aren't red are, of course, the malawas.
now, as for how i got my cherry shrimp to mutate....
i took a large number of them and put them in water that had an ever increasing amount of hydrogen sulfide. the immediate result was a fair number of deaths, with some survivors, which were able to reproduce. the survivors produced some shrimp that were completely clear, like ghost shrimp, and their offspring are what are in the photos. it worked because they were selectively bred by the harsh conditions. just about anytime you select for something, you will see a physical change, and it just so happened that the shrimp that were able to survive threw some genetics that produced some odd colors. i will probably do similar things with the malawa shrimp, among some other methods i have for mutating them.
one thing i may try, is exposing them to ever decreasing levels of dissolved oxygen. if i am right, this would cause them to concentrate more of their copper based blood in their bodies. it may be part of the reason why the one cherry shrimp has far more blue in it than i have seen in any of my cherry shrimp. its parents may have carried a mutation that would have otherwise gone completely unnoticed.
i really hope i can get some new lines out of the cherry shrimp. if so, it will help me in understanding how their colors are expressed through genetics.