1. Fish Health Fish Kills, Reproductive Issues
Multiple bacterial pathogens, but no consistent findings
Aeromonas hydrophila and other motile Aeromonads
Aeromonas salmonicida
Flavobacterium columnare
Multiple, often heavy parasite infestations
Leeches, trematodes, myxozoans, cestodes
Opportunistic fungal infections
Largemouth Bass Virus
Impaired Ecosystem
Immunosuppression

2. Indicators of Estrogenic Endocrine Disruption
Site
No.
Males
Intersex
Prevalence
Severity
% males
w Vtg
September 2005
Monocacy – U 11
82%
1.2
45%
Monocacy – D 7
100%
1.8
33%
April 2013
Monocacy - D
1.5
May 2014 13
77%
1.0

3. Feminization of Fishes Exposure to Environmental Estrogens
Intersex
in normally gonochoristic fishes
Immature oocytes within testes
Suggested as a marker of endocrine disruption
Used as an indicator of exposure to estrogenic compounds