Summary：The effect of two environmental factors (substrate type and water velocity regime) was studied in the ontogenetic migration intensity of kaluga, Huso dauricus, a protected species in the Amur River. Early-life stages studied were: free embryos = days 0–8; larvae = days 9–49; and juveniles = days 50–66. Effect of treatments on fish migration intensity was observed in circular channels, allowing migration in an endless stream. Daily migration intensity of fish was characterized by counting the number of daily upstream or downstream fish passes past a specific site in the channel observed for 5 min every hour by vision or video camera.

Yanhua Li, Boyd Kynard, Qiwei Wei*, Hui Zhang, Hao Du, and Qinkai Li. Effects of Substrate and Water Velocity on Migration by Early-Life Stages of Kaluga, Huso Dauricus: an Artificial Stream Study. Journal of Applied Ichthyology. 2013. 29(4):713-720.