bay pipefish
Syngnathus leptorhynchus · Syngnathidae · forage fish
Pipefish of bays and estuaries, from Alaska to Mexico, with a long, thin body that reaches 32.5 cm. It has no interest for rod fishing.
Also called: peixe-pipa-da-baía, pez pipa de bahía, Bay pipefish
- maximum
- 32 cm
- depth
- 0–5 m
the right time
to be on the water
Choose the place and the species. The index, from 0 to 100, combines weather, sun, moon and tide with each fish's habits. Up to 28 days, with each day's confidence.
Reading the weather across 3 global models and 31 simulations…
—
hour by hour
slide your finger or mouse over the chart to see each hoursee hour-by-hour table
why this index at —?
choose the day
Each card shows the day's index (0 to 100) and, below it, a strip with the index for each hour, from 0h to 23h. from poor to excellent.
the fishing month at a glance
what's the best window for the crew?
Choose how many fishing days. We compare each stretch by its average index, discount days with a warning or closed season, and show the 3 best.
trend for the coming weeks
Line: the middle value of 31 simulations of the American GEFS model. Band: where 8 out of 10 fall. Narrow, firm trend; wide, high uncertainty.
everything about the bay pipefish
who is the bay pipefish
The family Syngnathidae includes the pipefishes and seahorses, with a body covered in plates and a tubular snout. Males reach 32.5 cm, and females, which are larger, reach 38.5 cm. The species lives in the eastern Pacific, from Alaska to southern Baja California, in Mexico, in shallow bays and estuaries, among seagrass, from 0 to 5 m. It feeds on crustaceans, and it is the male that carries the eggs in a pouch under the tail. It is taken in commercial fishing and for public aquariums, but has no interest for sport fishing.
Essential profile. Identification, where it occurs and rules, with data from FishBase and the cited regulations. Season, time of day, technique and bait are added once we have a good source for the bay pipefish.
fun facts
- During reproduction, the female coils around the male in an S shape, and the eggs are fertilized in the male's pouch.
identification
Long, thin, straight body, with a tubular snout and covered in plates, like other pipefishes. It does not have the curved shape of seahorses. It lives among seagrass in bays and estuaries, sometimes in shallow water close to shore. Females are larger than males.
where found
Occurs in the eastern Pacific, from Alaska to southern Baja California, in bays, estuaries and shallow waters. In Latin America it is recorded from Mexico. There are no records off the Brazilian coast.
Habitat: Seagrass of bays and estuaries, from 0 to 5 m, sometimes in shallow water close to shore.
rules for the bay pipefish
Summary of the regulations we found, with the source for each. Rules change; before keeping or transporting fish, check with the state environmental agency.
We found no species-specific rule beyond the region's general rules.
catch and release
catch and release Releasing the fish alive, quickly and with a wet hand. During a closed season it isn't always allowed: what the regulation says applies.
Harmless to anglers. Handle little and return it quickly.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00026, b = 3.19; FishBase (relação peso-comprimento bayesiana, estimativa da própria espécie)). It's an average: a fat or lean fish can vary by 10% to 20%.
estimated weight
—
sources and references
Essential profile: size, length-weight, depth, countries and conservation come from FishBase and the cited regulations, and the texts were written from those sources. Season, time of day, sensitivities, technique and baits and lures are not included yet, because we did not find a good source for this species.
- scientific FishBase: Syngnathus leptorhynchus (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Syngnathus leptorhynchusNames by country and language.
where each number comes from
The weather comes from three independent global models, cross-checked hour by hour: when they agree, confidence goes up; when they diverge, the band between them shows on the chart. Beyond 16 days, we use the GEFS ensemble of 31 simulations: if 20 of the 31 predict rain, the chance of rain is 65%. Sun and moon are calculated astronomically, with no uncertainty.
The index adds up, weighted for each species: time of day (species curve anchored to real sunrise and sunset), moon (transits, rise and set, phase), pressure (3 h trend and 24 h swing), water temperature (in rivers, estimated from air temperature; at sea, estimated by an ocean model), wind, rain, clouds, tide and the month in the species' cycle.
sources for this lookup
how accurate the forecast is
Accuracy measured in the reference project (4 regions, 93 days, forecast vs. observed): maximum temperature is off by 0.6 °C on average the next day and 1.7 °C at 7 days; rain of 5 mm or more is detected 76% of the time the next day and 57% at 7 days. Detection isn't everything: the false alarm rate isn't published here yet, and 93 days in 4 regions is still a small sample. We now also measure every day, at the app's destinations: