Rhithropanopeus harrisii

Fish in the Bay – June 2025, Return to Lower South Bay (LSB).

After several visits to San Pablo Bay in the north, we returned to Lower South Bay marshes in early June. ...

Fish in the Bay – May 2025, WRMP San Pablo Bay Trawls, Part 3 – Gallinas Creek to Hamilton Wetlands.

This is part 3 of the San Pablo Bay series.  We continue our journey around San Pablo Bay. This time...

Fish in the Bay – May 2025, WRMP San Pablo Bay Trawls, Part 2 – Petaluma River.

This is part 2 of a 4-part San Pablo Bay series. The UC Davis Otolith Geochemistry & Fish Ecology Lab...

Fish in the Bay – May 2025, Extra Baby Fish Month

Extra Baby Fish Month!  It happened again.  Every once in a while, we see a bigger goby baby boom in...

Fish in the Bay – June 2024, Part 2. Gobies, Pipefish, & Bugs.

This is part 2 of the June report.  – These are additional observations that couldn’t be squeezed into the initial...

Fish in the Bay – July 2023, Record Starry Year

Record Starry Year!  As reported earlier, the year-to-date Starry count had already exceeded the previous record year as of June,...

Fish in the Bay – June 2023, Is Summer here yet?

More baby fishes showed up in June!  This included 60 baby Longfin Smelt and 178 baby Starry Flounder which is...

Fish in the Bay – May 2023, Extra Baby Fish Month.

More baby fish showed up in May.  For want of a better term, this was an “Extra Baby Fish Month.”...

Fish in the Bay – April 2022, Part 1: Traditional Baby Fish Month?

Long-time readers will know that April is “Baby Fish Month” in Lower South SF Bay.  Larvae of gobies and a...

Fish in the Bay – September 2021: Operation Guadalupe, Part 3.

Operation Guadalupe trawl stations. Operation Guadalupe. Continued.  For this third and last installment, we surveyed the upstream tidal end of...

Fish in the Bay – June 2021: Summer Fishes.

Trawl map. June Trawls.  The summertime Anchovy spawn commenced in June: see previous Anchovy Alert blog post – http://www.ogfishlab.com/2021/06/05/fish-in-the-bay-june-2021-anchovy-alert-spawning-anchovies-have-returned-to-lower-south-san-francisco-bay/.  This...

Fish in the Bay – August 2020: Red Ceramium, Tricolored Blackbirds, & more Spawning Anchovies.

Hello again.  This is a bit of an “odds and ends” clean up post.  I was unable to join the...

Fish in the Bay – July 2020: Lots of Crangon & Topsmelt, plus a Red Ceramium Bloom.

Trawl map.   Bay-side stations trawling results.   Upstream of Railroad Bridge. Our July trawling weekend was quite an experience. ...

Fish in the Bay – September 2019, UC Davis Trawls – Exopalaemon Blow-Out plus more Anchovy Color Investigation.

I did not join the September trawls, so the photo record is a little sparse.  It was an interesting month...

Fish in the Bay – April 2019, UC Davis Trawls – April is baby fish month (Part 2).

Happy April part 2 (now a little belated)!  I went trawling with the Hobbs team on three weekends in April...

Fish in the Bay – December 2018 UC Davis Trawls – Crangon 2018: Year of the Crangon!

Happy New Year!  Welcome to 2019.  Good News:  We wrapped up December with an unbelievable Crangon brooding event.  This was...