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.
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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
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 gulf flounder
how to recognize it
A flounder with a short, deep body and both eyes on the left side. The Spanish name, tres ojos ("three eyes"), refers to the eye-shaped spots on the body. It prefers hard and sandy bottoms of bays, lagoons and shallow waters, while the Florida flounder (Paralichthys lethostigma), from the same coast, stays more in estuary mud.
Also called: linguado-barriga-branca, lenguado panzablanca, lenguado tres ojos, gulf flounder
don't confuse with:
We don't have tips on season, bait or technique for this species yet.
where found
open on the large mapWhere to look: Hard and sandy bottoms of bays, lagoons and shallow coastal waters, 19 to 130 m.
It lives from North Carolina to southern Florida, in the Bahamas, the Gulf of Mexico, the Caribbean, and from Colombia to Trinidad and Tobago.
rules for the gulf flounder
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.
how much it weighs without taking it out of the water
estimated weight
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how we calculate
Length-weight relationship W = a·Lb (a = 0.00676, b = 3.16; FishBase (relação peso-comprimento bayesiana, estimativa pelo gênero e formato do corpo)). It's an average: a fat or lean fish can vary by 10% to 20%.
more about the gulf flounder
A flounder of the family Paralichthyidae, with a flattened body, reaching 71 cm and up to 2.8 kg. It lives in bays, lagoons and shallow coastal waters, on hard and sandy bottoms, 19 to 130 m deep. Like other flounders, it lies on the bottom. It occurs from the western Atlantic of the United States to northern South America, in subtropical waters. Commercial fishing is small, but it is accepted in sport fishing.
Family: Paralichthyidae · predator
fun facts
- It forms pairs during spawning.
similar species
sources and references (2)
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: Paralichthys albigutta (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Paralichthys albiguttaNames by country and language.
how we calculatewhere 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: