Dono - Can you post a close up clear picture of a couple sizes (Lg&medium) of your emerald shiners in its own thread in Raising Forage and Bait? Then we can figure out what you are doing to get shiner reproduction and recruitment. Emeralds very difficult to get them to recruit in a pond and you've managed to get it figured out. Your discovery will benefit lots of fish oriented people. Adult emerald shiners can get 5" (127mm)long.

aka Pond Doctor & Dr. Perca Read Pond Boss Magazine -
America's Journal of Pond Management