I didn't even know exactly what habitat fragmentation was. When I finished reading the article you linked to... I was like... that would be a relatively simple fix compared to some of the other things we have to do to help keep species from becoming to close too extinction for comfort. In fact considering it is a dwarf (don't know this exact species) but just seeing it's first scientific genus, I would automatically assume these guys are relatively small. 5 inches at most? more like 3-4? Less? They probably won't need even large plants, just enough to offer cover and a safe resting spot.