In Taiwan, there are several contenders for the title of best-loved native animal. Many people will name the Formosan black bear or Formosan sika deer. Bird lovers might point to the Taiwan blue magpie or Mikado pheasant. But a few might also nominate a fish- the Formosan landlocked salmon. It may not look like much, but this fish is so remarkable that the first biologists to hear about it refused to believe that it could even exist. Most of all, this fish is remarkable for its tenacity. Over the last hundred years, humans have devastated the species, but it has hung on. And now with human intervention, it has started coming back. For nearly 30 years, the recovery of this species has been a chief goal of Shei-pa National Park, and for 20 of these years the park's Liao Lin-yan has been working to achieve it. He's brought a kind of dedication to the task that you can only call admirable. Last year, he and his colleagues undertook the most recent population survey. This two-week job involved wading up and down 10km of stream and counting every fish they could find. Mr. Liao joins us this week to introduce this fish and what makes it so special. He'll tell us about their decline and recovery, the results of his survey, and why counting fish one by one is not as crazy as it sounds.