I too have fed my rays fish that i have caught (freshwater, saltwater, crayfish.., etc.) and had no problems what so ever... I think that you just need to be smart about it and take all of the obvious and neccessary precautions and you will be fine.... just be smart about it....
Nic is right about pollutants... this to can affect a fish's health just as much as a human......, so dont feed your rays anything that you wouldnt eat and you will be fine....
Nic is right about pollutants... this to can affect a fish's health just as much as a human......, so dont feed your rays anything that you wouldnt eat and you will be fine....