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 oceanic puffer
how to recognize it
Pufferfish with a spindle-shaped body, of a typical pufferfish form. Adults are dark green, grayish brown or bluish on the back and white below. Juveniles have stripes on the back, from the eye to the dorsal fin, and specimens under 33 cm have dark blotches at the front and in the middle of the belly and flanks, near the base of the pectoral fin. It looks like the smooth puffer (Lagocephalus laevigatus), of the same genus, but lives more in the open sea.
Also called: baiacu-oceânico, baiacu, botete oceánico, tamboril oceánico, oceanic puffer
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: Open sea and shelf waters, near the bottom or in midwater, usually 10 to 100 m deep; it may enter estuaries.
In Latin America it lives in the open sea in Brazil, Colombia, Ecuador, Cuba, Mexico and Central America. In Brazil there are records from the coast of Bahia to that of São Paulo.
coast
rules for the oceanic puffer
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.
Conservation: Not on the Brazilian national list (Ministerial Ordinance GM/MMA No. 1.667/2026).
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 = 0.01096, b = 2.91; FishBase (relação peso-comprimento bayesiana, estimativa da própria espécie)). It's an average: a fat or lean fish can vary by 10% to 20%.
more about the oceanic puffer
Pufferfish of the family Tetraodontidae, with a spindle-shaped body, reaching 61 cm and weighing up to 3.2 kg. It is a mostly oceanic and pelagic species, living near the bottom or in midwater, usually at 10 to 100 m deep, and has been recorded down to 476 m. It may enter estuaries. It feeds on crustaceans and squid. It occurs in tropical and temperate seas worldwide, and in Brazil there are records from Bahia to São Paulo. It has a commercial fishery and is considered a sport fish, but fatal poisoning is suspected to have been caused by it, and its flesh should not be eaten.
Family: Tetraodontidae · predator
in the kitchen
It should not be eaten: it is suspected of causing fatal poisoning.
similar species
sources and references (3)
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: Lagocephalus lagocephalus (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Lagocephalus lagocephalusNames by country and language.
- official Portaria GM/MMA nº 1.667, de 27 de abril de 2026: Lista Nacional Oficial de Espécies da Fauna Ameaçadas de Extinção (peixes e invertebrados aquáticos)The species is not on the list. Checked in the DOU of April 28, 2026.
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: