northern clingfish
Gobiesox maeandricus · Gobiesocidae · omnivore
Small rocky-shore fish of the Pacific, which clings to rocks with an adhesive disc on its belly. It has commercial use and appears in public aquariums.
Also called: peixe-ventosa-do-norte, peixe-ventosa, pejesapo, Northern clingfish
- maximum
- 16 cm
- depth
- 0–8 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…
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hour by hour
tap or drag on the chart to read each hour · on a keyboard, arrow keyssee 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 northern clingfish
who is the northern clingfish
The northern clingfish belongs to the family Gobiesocidae and reaches 16 cm. It lives on rocky shores, from the intertidal zone to 8 m deep, often in the canopy of giant kelp. It occurs from southeastern Alaska to southern California, in the United States, and also in Baja California, in Mexico. It feeds on small crustaceans and mollusks. It has commercial use and also appears in public aquariums. Because it breathes air, it can stay out of the water hidden under rocks or algae.
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 northern clingfish.
fun facts
- It can stay out of the water, hidden under rocks or algae, and breathe air.
identification
Elongated body, light olive-brown to cherry-red, with a reticulated pattern. Dark lines run from the eyes, and there are white bars between the eyes and, in juveniles, on the back and along the edge of the caudal fin, which is well rounded. The pectoral fins are short and broad, and the pelvic fins are joined into an adhesive disc on the belly.
where found
In Latin America, only in Mexico, in Baja California. The species occurs from southeastern Alaska to southern California, in the United States.
Habitat: Rocky shores in the intertidal zone and among algae, down to 8 m.
rules for the northern clingfish
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. Keep the fish damp when releasing it, since it can breathe air out of the water.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00617, b = 3.15; FishBase (relação peso-comprimento bayesiana, estimativa)). It's an average: a fat or lean fish can vary by 10% to 20%.
estimated weight
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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: Gobiesox maeandricus (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Gobiesox maeandricusNames 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: