I have ordered some bluebolt, black taiwan bee and black KK shrimp (5 of each) to see how this goes now, the parameters are perfect for Caridina shrimp and there have been wild type cherry shrimp living in that tank for about a year or more with no problems, so am going to give it another go! Decided to get a delivery done before winter sets in here, and also getting 20 bloody mary shrimp for the old tank so will try and fish out as many of the wild types over the next few days to make room for the new red shrimps? I am getting this lot from ebay so will be interesting to see how that goes as it has been years since I used that for any shrimp?
I prefer red taiwan bee but will just see how these black ones go first, obviously red will be much more visible to the fish? I guess I can rule out poisoning or disease as a tank issue as there have been shrimp living in the tank for a long time now! It still doesn't look nice and green though with this different substrate, and the fish may be an issue - hopefully the shrimp that are sent will be big enough to reduce the risk of that, the listing states they will be 15mm?
Simon