Here is a quote from the state of the lake meeting minutes about gobies:
"Round goby is an invasive species first reported in
southwestern Lake Ontario in 1998 and in the Bay
of Quinte in 1999 (Mills et al. 2005). Gobies
increased in distribution, abundance, and biomass
throughout Lake Ontario, peaking in 2008, and
remaining at a variable, lower level since"
Gobies were found in Lake Ontario in the 90's (1998) like I stated above and their population peaked and is lower. If your "theory" had any merrit to it, we would have had dismal returns of kings and crap fishing long before last year and this season. How would we have had STELLAR salmon fishing in 2012 by your "theory"???? The pen reared fish are kept for three weeks to a month and are big enough at release to not be eaten by a goby.