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Fish in the Bay – April 2023, Traditional Baby Fish Month

April is “Traditional Baby Fish Month.”  The tradition is fairly new in Lower South San Francisco Bay.  New for us,...

Fish in the Bay – March 2023, Freshwater Flushing & Spawning Fishes!

Atmospheric rivers and rainwater flushing continued through March.  This extended rainy season is a very welcome change after at least...

Fish in the Bay – February 2023, Freshwater Flushing Continues.

Cold rain continued to fall as Atmospheric Rivers blew in from the ocean throughout January and February, and even through...

Fish in the Bay – January 2023, Part 2 – The Rest of the Fishes.

Part 2 of the January report covers all the other interesting fishes and bugs.  Seven atmospheric river storms that swept...

Fish in the Bay – January 2023, Part 1 – Atmospheric River Blowout.

Heavy cold rain drenched us on January 14th and 15th.  We were under at least the sixth Atmospheric River that...

Fish in the Bay – December 2022 – Rain & Brown Water

We trawled in cold and intermittent rain on December 10th and 11th.   This seasonal weather change is a very good...

Fish in the Bay – Special Report: Understanding H. akashiwo & the Red Tide. What Does This Strange Organism Want?

What caused H. akashiwo to bloom into a red tide frenzy in San Francisco Bay last summer?  Another bloom like...

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 – September 2022, part 2 – Seaweed & Seagrass Beds inhibit Red Tides!

This is a follow-up post regarding Harmful Algal Blooms (HABs) and the recent H. akashiwo red tide in San Francisco...

Fish in the Bay – September 2022, Red Tide Emergency Trawls.

As we are all now aware, single-celled phytoplankton called “Heterosigma akashiwo” bloomed into a dark reddish-brown stain across much of...

Fish in the Bay – August 2022, Bat Ray Bonanza.

A slightly belated report from August trawls.  At the time of this report, we were not yet aware of Red...

Fish in the Bay – August 2022, RED TIDE ALERT!

Folks, the Red Tide continues to sweep across portions of North and Central San Francisco Bay.  Areas affected by dark...

Fish in the Bay – Special Report: Green Water, 6-7 Aug 2022.

This is a Fish in the Bay special report to document observations of water color in Lower South San Francisco...

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 – Special Report, Color Change Experiment #7

Belated report:  This Clupeiform color change experiment was conducted in December but never reported.  This is part of my longstanding...

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 – June 2022, Record Anchovies and Gobies!

The fishes are now solidly in their summertime regime:  Anchovies, Gobies, baby Sharks, and Bat Rays.  Cool water fishes have...

Fish in the Bay – Alert! The 2022 Anchovy Spawn has Begun!

The Anchovy population just exploded in Lower South SF Bay.  The monthly totals in April and May were 29 and...

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