leopard shark

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 Eden Landing Survey #2

The UC Davis OGFL crew performed their second fish assessment of the Eden Landing Ecological Reserve in early May.  They...

Fish in the Bay – April 2025, Part 2. Corbula Attack, Gobies, Bottom Fishes, & Tides!

Part 2 of the April report.   1. Corbula Clams. The main stem of Coyote Creek between UCoy2 and Coy1...

Fish in the Bay – April 2025: WRMP – Eden Landing Trawls.

The UC Davis OGFL lab was contracted by the Wetlands Regional Monitoring Program (WRMP) to perform fish monitoring surveys at...

Fish in the Bay – Special Report: Lower South Bay Broodstock Trawls, Jan-Feb 2025 – Pictures at an Exhibition, A Fish Opera.

This is a third and final report on 2025 Longfin Smelt Broodstock Trawls.  I was not present at most of...

Fish in the Bay – Merry Fishmas, 2024!

Merry Fishmas everyone!  I fell horribly behind in my fish reporting, so I am combining Fishmas with the November blog. ...

Fish in the Bay – September 2024. Upstream Invasions.

A belated September report … The overall raw fish count increased, but this was not good news.  Almost 50% of...

Fish in the Bay – June 2024, El Nino Watch.

El Nino officially ended in May, but effects on fishes linger.    Overall fish totals remain low – with one...

Fish in the Bay – November 2023, Part 3 – Bat Rays to the Rescue?

We caught 36 Bat Rays in November.  It was unexpected to see so many this late in the year.  With...

Fish in the Bay – November 2023, Cool season.

Winter fishes arrive as weather cools.  This creates a complicated picture in November.  Many summertime fishes linger as Longfins, Herring,...

Fish in the Bay – September 2023, Summer’s End.

A belated September fish report:  I missed September trawls, but Sami, Niko, and Janai sent me some photos. I got...

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 – November 2022 – Sturgeon Alert!

The disastrous San Francisco Bay Red Tide of August 2022 is now fading into memory.  The most crushing long-lasting effect...

October Report – Big Bass & Guitarfish Month.

In response to concerns about fish kills from the July-September Red Tides in Central and South San Francisco Bay, I...

Fish in the Bay – Special Report, The Year of the Shark – 2022.

Schematic distribution of the 9-10 July shark catch: 20 Leopards + 2 Brown Smoothhounds. Our block-buster shark year continues.  By...

Fish in the Bay – July 2022, Palaemon Shrimp take over.

Record-breaking Palaemon Shrimp month: almost 13,000 were caught in July.  The previous record monthly catch was in November 2021 when...

Fish in the Bay – June 2022, Supplemental Report, Fishes & Other Critters.

By Luca Sartori, California State Maritime Academy Class of 2025.   https://www.csum.edu/ Editor’s note: Luca is spending his summer internship developing...

Fish in the Bay – May 2022, Part 2: Leopard Shark Baby Boom.

These are additional notes from the May trawls.  As always, there are so many critters to discuss and so little...

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 – March 2022: A Crazy & mixed up month!

March was an unusual month that we still have not completely figured out.  We are in the start of a...

Fish in the Bay – November 2021: Winter Fish Transition.

Happy New Year 2022. I am thinking about 2021 in review, but at the same time, I am still catching...

Fish in the Bay – October 2021: Longfins Returned. Non-native Silversides & Shimofuris were still out of control.

Trawl map. The results from October trawls were a mix of good and bad news on several levels.   Bay-side...

Fish in the Bay – September 2021: Operation Guadalupe, Part 2.

Operation Guadalupe trawl stations. Operation Guadalupe. Continued.  For this second installment, we examine some of the fishes in Alviso Slough...

Fish in the Bay – September 2021: Operation Guadalupe.

Hello folks.  From mid-August thru mid-September, the UC Davis OG Fish Lab did something very different.  With additional funding from...

Fish in the Bay – August 2021: Red Ceramium, Boogers, a Nudibranch, and other Summertime Oddities.

Trawl map. We are continuing to experience a very good Anchovy year.  The 2021 total is on track to possibly...

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 – May 2021: Finishing off the La Nina spring.

Trawl map. May Trawls.  May is typically a low-fish transition month between “Baby Fish Month” of April and summertime Anchovies. ...

Fish in the Bay – April 2021: More baby fish.

Trawl map. April is “Baby Fish Month.”  We caught almost 1,900 unidentifiable baby fish.  Most of these tiny babies were...

Fish in the Bay – January 2021, part 1: Winter Fishes = Longfin, Shad, Herring, & Anchovy(?).

Trawl map. Good news first:  1126 Anchovies! That is the biggest January catch of Anchovies since 2014.  465 Longfin Smelt...

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