So far (at least haven't found any news of it) no major fish die-offs. But may want to not swim or eat fish/shellfish from the Bay for a while. Probably was not the best day to go windsurfing yesterday.
Red Tide Is Mostly Gone. Caution Still Advised - San Francisco Baykeeper
The Bay’s unprecedented “red tide” algal bloom has almost completely gone away. SF Baykeeper continues to advise caution against contacting murky, discolored waters and encourages reports of these conditions to its Pollution Hotline. Low dissolved oxygen conditions and fish kills that followed...
baykeeper.org