![5_12_guyana](https://www.anglingtrade.com/wp-content/uploads/2012/05/5_12_guyana.jpg)
Oliver White with a "medium sized" Arapaima
AT editor and Field & Stream editor-at-large Kirk Deeter recently took part in a Costa Del Mar-sponsored expedition to chase arapaimas—the world’s largest scaled freshwater fish—on the fly. Check out his slideshow of fly fishing’s “new frontier”.