Hi Lija, yes the last pic is the female from the first ones I bought. It looks like all four new ones are male to me. A trip to the vet yesterday has swabs taken for chytrid and ranavirus, but I won't get the test results back for ten days or more.
Much faster was a fecal exam (there was a sample in the box one of them came in and also a new one in the cage yesterday morning) which was done immediately by Gary at Cambridge Reptiles for me. Both were positive for small amounts of worm eggs and protozoan.
As far as separate quarantine is concerned, I housed the new ones together as they were shipped together and have been kept in the same enclosure together for the last 6 weeks, I assumed that if one has chytrid of ranavirus then they all would? Or might this not be the case? (They are being kept separate from my original of course)
I've ordered some Metronidazole (Flagyl 250mg tabs) and some Panancur (100ml bottle with 1 ml of suspension containing 100 mg active ingredient fenbendazole),
but I'm finding contradictory information about doseage. The frogs weigh around 100g, any suggestions from anyone who has used these medications with frogs successfully before?
The frogs have also been started on Baytril baths (10% oral solution dissolved at 0.5ml to 100ml water) due to the amount of infected abrasions (hands/feet as well as noses/mouths). The instructions are for 6-8 hours over 5 days but the frogs aren't keen to sit in it that long. I'm sure I read on here 15 min baths were the normal recommendation but I can't find it now. Again, can anyone suggest what the tried and tested method for bathing frogs in Baytril is?

I'm asking for a lot of help again it seems! Hopefully this thread will serve to help others considering this species. I'd love to think that it becomes possible to breed these in captivity, the availability of CB animals would reduce the demand for WC animals which from what I've seen to date can only be a good thing.