Smelt removal work

The Rainbow smelt (Osmerus mordax) one invasive fish species of inland lakes of North America. How ever this fish has small body size, but live as pack and have negatively affected native fish population. They eat egg and larvae of native fish. CFL of UW has been working on project to decreasing smelt population size. Research site is Sparkling lake. We are Mongolian fish biologist are participating in this work. Before setting fyke net, we have little studied about smelt spawning. (substrate, water temperature, date) and introduced precious resecrh data. First four fyke nets were set in the east and east south shores of Sparkling lake on 21 April, 2008.
Still, lake has ice and mostly we were breaking ice and set nets. Currently we haven't catch any smelt by our nets. May be still water temperature is to low. It is 2.0 -2.4 C. Smelt's spawning run begins in 4.0 C of water temperature.