They don't utilize the stream during non-breeding seasons and aren't territorial (other than complaining when another frog walks on thier sleeping perch) out side of the breeding season so I'm not sure why there is a jump to requiring a large enclosure (particularly when it isn't necessary in other Atelopus). Basically from what we can tell, the issue with successful reproduction has a lot to do withWould it be a fair assumption that these frogs NEED space?
Has anybody ever set up 2 LARGE vivs side by side, one being strictly vegetation and hides, etc.(standard viv most of us use), and one being a streamside viv with a heavy emphasis on water quality, spacial needs, and landscaping? The frogs transfered seasonally(when females become gravid)?
The point in two seperate vivs is the elimination of having to deal with keeping the water clean in the pool and the return. The other viv(streamside) would be set up with the complete goal of providing good water quality...
1) how the toads were handled during collection
2) how they were handled before export
3) how they were handled post import but before they get to the hobbyist.
Even much larger Atelopus like zeteki do not require a large enclosure to breed (zeteki have been repeatedly bred in 20 gallon long enclosures as well as larger enclosures).
In prior imports, toads that died within a relatively short period of time after import were found on necropsy to lack fat reserves. This appears to be one of the big issues with success with Atelopus in captivity particularly when compared with the success with A. zeteki and A. varius by institutions (since those toads were collected, kept clean, fed etc (in fact. A. zeteki deposited fertile eggs in one of the plastic bags during the flight back into the US.