vacuocua croaker
Corvula macrops · Sciaenidae · predator
Uncommon croaker of rocky coastal areas of the Pacific, from the southern Gulf of California to Ecuador, including the Galápagos.
Also called: corvina-olhuda, corvina ojona, cococha, vacuocua croaker
- maximum
- 25 cm
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 vacuocua croaker
who is the vacuocua croaker
The bigeye croaker is an uncommon fish of the family Sciaenidae, living in rocky coastal areas of the eastern Pacific, from the southern Gulf of California to Ecuador, including the Galápagos Islands. Countries with records are Mexico, Guatemala, El Salvador, Honduras, Nicaragua, Costa Rica, Panama, Colombia and Ecuador. It grows to 25 cm, with a common size of 20 cm. It has a fusiform body and large eyes, as the scientific name macrops indicates. The Spanish name ojona also refers to its big eyes. There are no records of its use in 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 vacuocua croaker.
identification
Elongated, fusiform body of a croaker, with large eyes, a trait highlighted by the popular name ojona and the scientific name macrops. It lives in rocky coastal areas, unlike other croakers of the same coast that live in lagoons and sandy bottoms, such as those of the genus Larimus. To recognize it, look for the large eyes and the rocky habitat.
where found
Eastern Pacific, from the southern Gulf of California to Ecuador and the Galápagos Islands, in rocky coastal areas of Central America and northwestern South America.
Habitat: Rocky coastal areas of the eastern Pacific.
rules for the vacuocua croaker
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.
Poses no danger to anglers. As it is uncommon, release with care any fish that are hooked.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.01, b = 3.11; 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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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: Corvula macrops (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Corvula macropsNames 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: