Pachyurus adspersus · Sciaenidae · predator
A croaker endemic to Brazil, from rivers flowing into the Atlantic, such as the Mucuri, the Doce and the Paraíba do Sul. It is important as food in commercial fishing.
Also called: pescada-brasileira, corvina, pescada, Brazilian croaker
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…
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.
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.
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.
A fish of the family Sciaenidae, the croakers, freshwater with an elongated body. Reaches 26.4 cm. It is endemic to Brazil and lives in rivers that flow into the Atlantic Ocean, such as the Mucuri, the Doce and the Paraíba do Sul. It lives from the bottom to midwater. It is an important food fish, used in commercial fishing and aquaculture. Although it belongs to a family of mostly marine fishes, it lives only in fresh water. It is not dangerous to anglers, but its dorsal fin has spines.
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 brazilian croaker.
A fish with an elongated, spindle-shaped body, typical of the family Sciaenidae. It occurs only in Brazil, in rivers that flow into the Atlantic, on the east and southeast coast of the country. Because of its restricted range, it is set apart from the croakers of the Amazon, the La Plata basin and the São Francisco, even though its shape is similar. To recognize it, the capture location is the main sign.
Endemic to Brazil: it occurs in the Atlantic rivers, such as the Mucuri, the Doce and the Paraíba do Sul.
Habitat: Freshwater rivers that flow into the Atlantic, from the bottom to midwater.
native to the basins
Summary of the regulations we found, with the source for each. Rules change; before keeping or transporting fish, check with the state environmental agency.
Conservation: Not on the Brazilian national list (Ministerial Ordinance GM/MMA No. 1.667/2026).
We found no species-specific rule beyond the region's general rules.
Allowed: Only exotic or hybrid species, 3 kg + 1 fish per day, with handline, rod, simple pole, or spinning or baitcasting reel. Nets prohibited. Keep the minimum distances from dams and reservoirs.
Source: Portarias IEF nº 154/2011 (São Francisco), 155/2011 (East) and 156/2011 (Grande/Paranaíba)
Allowed: In rivers, shore fishing only; in reservoirs, from a boat or from shore. Only non-native species, hybrids, and giant river prawn (camarão-gigante-da-malásia), up to 10 kg + 1 fish. Prohibited in floodplain lakes and within 1,000 m of dams.
Source: IN IBAMA nº 195/2008
Allowed: Same rules as the Southeast basins: only non-native species and hybrids, up to 10 kg + 1 fish; in rivers, shore fishing only.
Source: IN IBAMA nº 196/2008
It is not dangerous to anglers, but it has spines on the dorsal fin: hold it by the body, with a wet hand, and return the fish to the water right after capture.
It is an important food fish, used in commercial fishing and aquaculture.
Length-weight relationship W = a·Lb (a = 0.0055, b = 3.15; 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
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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.
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.
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:
Your location is saved only on this device and feeds the forecast, the map and the "today" on the home page.
