About Pacific Tomcod
Pacific tomcod (Microgadus proximus) is a genuine cod — family Gadidae, the same family as Atlantic cod, pollock, and hake. It is not a croaker, not a drum, and not closely related to the white croaker that anglers often call 'tomcod' colloquially in SoCal. This is a small, cool-water, estuarine gadoid that ranges from Alaska to Southern California but is most abundant and reliably caught in NorCal bays and river estuaries.
FishBase doesn't document an impressive maximum size — these are small fish, typically 6 to 12 inches and under a pound. The fighting quality is modest. But the accessibility makes them valuable: they live in shallow, calm water around NorCal piers and bay shores, they bite readily on simple rigs, and they're forgiving of technique. That combination makes them the default beginner fish for NorCal anglers learning bottom fishing.
They're not a destination species for experienced anglers. But if you're fishing a NorCal bay in spring or fall and want consistent action, dropping a ghost shrimp rig from a pier is a reliable way to spend an evening.
How to Catch
Simple bottom rigs with small bait. Tomcod feed on small invertebrates along soft and sandy bottoms in bays and estuaries. A size 2 bait hook on a dropper loop, baited with ghost shrimp, pile worm, or cut squid, dropped to the bottom with a 1–2 oz sinker, is all you need. The fish are not selective. If there are tomcod on the bottom where you're fishing, they'll find the bait.
Light tackle is the play — 6–10 lb line and a size 1000–2000 spinning reel. The fight is light for a small fish but feels appropriate on ultralight gear. From a pier, any 8–10 ft light rod will do the job.
Tidal timing helps. Tomcod feed actively during moving tides; dead slack water often produces nothing. Position near the bottom in a tidal channel or bay flats area and wait for the current to carry food to the fish.
Eating Profile
Mild, white cod-family meat. The fillet per fish is small — a 10-inch tomcod yields maybe 2 oz of clean meat — so you need a limit to make a meal. That said, the flesh is clean and mild, fries or bakes well, and tastes like what it is: a small cod. Ice them promptly (all fish, but especially small fish which warm quickly); fillet same day.
Common Mistakes
- Using too large a hook. Tomcod have small mouths. Size 2–4 bait hooks; nothing bigger. Large hooks produce more missed strikes than hookups.
- Fishing warm-water southern California locations. Tomcod are a cool-water NorCal species. They exist south of the Golden Gate but in lower density. If you're targeting them specifically, focus on Humboldt Bay, Bodega Bay, Tomales Bay, and SF Bay mudflats.
- Confusing them with white croaker. They look somewhat similar at first glance (small, silvery bottom fish) but white croaker have a different head shape, lack the small chin barbel that tomcod have (a true cod family feature), and are more common in SoCal surf zones. The chin barbel is the field ID.
- Expecting large fish. If you catch one over 14 inches, that's a very good fish. Set expectations accordingly — tomcod are a numbers game, not a trophy game.
Month-by-Month
- Jan–Feb: Present in NorCal bays year-round but slower bite in deep winter; piers over soft bottom can still produce.
- Mar–Apr: Season picks up as water warms slightly. Bay edges and estuaries produce consistently.
- May–Jun: Good action across NorCal bays. Ideal light-tackle month.
- Jul–Aug: Peak summer abundance. Pier fishing in Humboldt Bay and Bodega Bay produces well.
- Sep–Oct: Excellent fall action; fish are feeding before winter.
- Nov: Still catching in warmer NorCal bays.
- Dec: Slower; fish remain but bite decreases.
