1.0Orvis Newshttps://news.orvis.comPhil Monahanhttps://news.orvis.com/author/monahanprich600338<blockquote class="wp-embedded-content" data-secret="VPlXQlCjGo"><a href="https://news.orvis.com/fly-fishing/video-how-to-tie-the-iso-iso-baby">Video: How to Tie the Iso Iso Baby</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://news.orvis.com/fly-fishing/video-how-to-tie-the-iso-iso-baby/embed#?secret=VPlXQlCjGo" width="600" height="338" title="“Video: How to Tie the Iso Iso Baby” — Orvis News" data-secret="VPlXQlCjGo" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); </script> Some of the best dry-fly action of late summer and fall features trout feeding on Isonychia adults. As Tim Flagler notes in this video, fish seems to eat these mayflies even when there are very few on. . .https://news.orvis.com/images/01-fly-fishing/2014/09-sep/iso.jpg