1. Mucus production is another proposed, but poorly supported, mechanism for fish mortality . 2. Disease is a prime agent affecting fish mortality , especially when fish are young. 3. Testing for fish mortality has indicated fish mortality figures to be less than 5 %. 4. Testing for fish mortality has indicated fish mortality figures to be less than 5 %. 5. There, he emphasized the impact of acid rain on acidification of waters and on fish mortality . 6. Although other water-soluble copper compounds can be effective in this role, they generally result in high fish mortality . 7. While already famous as an economic entomologist, Forbes undertook studies of massive fish mortality in Lake Mendota, Wisconsin. 8. This is because lures reduce the incidence of deep hooking which has been correlated to fish mortality in many studies. 9. Regulators denied Entergy's request to install fish screens that they said would improve fish mortality more than new cooling towers. 10. In 1997, there was mass fish mortality due to the Reed continues to be harvested for thatch within the reserve.