Hi Will
Explained it in the PM roughly, will write and article about it and most will be OFFENDED as it all come down to water quality not water make up so much, Crystal and Cherry types are conditioned to poorer aquarium water conditions being line breed for a long time, new species of any aquatic critter are more touchy to pollutants and over feeding= poorer water quality.
As most shrimp including Crystal and Cherry types come from higher up creeks the water has less or no NO3 and phosphates as well as other pollutants we can not measure, water changes, not over crowding, not mixing species to make more pollutants same as over crowding and feeding sparingly is the key, they are not use to the high processed foods we offer YET, KISS keep it simple stupid.
I keep the food to leaves, a bit of various flakes at times, timber and Algae wafers, water change heaps and thats about it, water quality stays in the soft range under 100 on Bens TDS meeter and PH ranges 6.8 to 7.2, tap water comes out up here at PH7.2 and around 60 to 70 on TDS meeter, if I don't keep Coral in the water the PH will drop to 6.8ish and with coral it stays 7.2ish, more coral the higher the PH will go that one is a trial and error and really the coral only apply's to really soft tap or starting water.
I have had many conversations with people that have lost the Zebs and it always come back to poor water, if I say that I can sense the wall go up, not me I am a good keeper and my other shrimp are OK, yep the other shrimp are use to pollutants in aquariums and we all have them I sure do, but in the Zebra tanks/ponds I keep the feed down and the water change up, its hard where the water is not good, so the solution is keep the number down and keep the feeding down, feeding being the main one.
There is a number of new species up here that will be tough for a while but worthy of persistence, Ben got to see a few on the week end just past.
In a nut shell the longer aquatic critters are breed in thanks the more we are selecting Aquarium conditioned animals, unknowing that we are doing it, history shows well critters that were hard years ago are easy now, Bristle nose are a classic 35 years ago few people could breed them, now any one can, L number cats are the same 15 years ago hard now easier, I am sure I read Crystal types were hard to breed years ago. Neon Tetras were a tricky one 50 years ago now they are easy, it goes on and on a bit like I do.
As a guide colour is a sign that the water is not to there liking, as we can not see sick animals like we can in fish, we have to use colour as a tell tail, the first sigh a Zeb will give of being stressed is they turn blue in place of black then zebras will loose colour if not happy with there water and long term exposure to that will stress them and bring on sick animals then dead and I like many have few ideas about shrimp diseases knowing when it to late and the battle is lost.
Blue in a lot of native shrimp at least is a stress sign, Ben and I caught some Malanda shrimp on Sunday and near the end of the day there was a couple of really bright blue males in the bucket, when dropped in a tank they lost the blue and went clear in 15 minutes, just as a side not I never acclimatise shrimp just drop the in the tanks, I did not say that!!!
Time to stop raving and write a article
Bob