Pond Boss Forums FISH & FISHING Show off your catch Bluegill are dying

I'm sure you are right about water being the cause.
1. Water temps? Normal for this time of year. Hot days, cool nights.
2. Oxygen? Maybe but no visible signs this has changed recently.
3. Herbicide? Hydrothol (8# spread over Naiad). Reward (12oz sprayed on Naiad). There were signs of BG "stressing" before the treatment. Certainly could be a contributor though.
4. Could be too many fish. There seems to be a lot for a 1/2 acre pond.
5. Could also be spawning activity. No nests but saw very "fat" bass about a week ago.
6. Food source has not changed. I do not feed them.
7. Could be fish from another body of water. Last runoff was in March.

One difference I have noticed is a lack of filamentous algae so far. More planktonic algae and more Naiad though. Tells me lots of nutrients in the water. Probably runoff from upstream vineyards and pastures.

Keeping my fingers crossed it is not going to be severe. Thank you all for your input.