white-eye
Oxyzygonectes dovii · Anablepidae · omnivore
Small fish from low rivers and brackish waters of the Pacific coast of Central America, a relative of the four-eyed fishes. It is hardly ever caught on rod and line.
Also called: peixe-olho-branco, olho-branco, ojos blancos, white-eye
- maximum
- 15 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
slide your finger or mouse over the chart to see each hoursee 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 white-eye
who is the white-eye
The white-eye is a small fish of the family Anablepidae, the same as the four-eyed fishes, and reaches 15 cm. It lives in low-altitude rivers on the Pacific slope of Central America, between Nicaragua and the Azuero peninsula in Panama, and many live in brackish water. It does not migrate. It feeds on detritus, algae and, sometimes, on land insects that fall into the water. It is not a sport fish: it appears in commercial fishing and the aquarium trade, and it has already been bred in captivity.
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 white-eye; in the meantime, see the similar species.
fun facts
- It has already been bred in captivity.
identification
Small, elongated fish, similar to a sardine, up to 15 cm. The best guide is the place: low-altitude rivers and brackish waters of the Pacific slope, from Nicaragua to Panama. It lives near the bottom. On the same coast, the Pacific four-eyed fish (Anableps dowii) is a close relative, but its eyes are split into two parts, which sets it apart.
where found
Pacific slope of Central America, between Nicaragua and Panama, in low-altitude rivers and brackish areas.
Habitat: Low-altitude rivers, up to 15 meters above sea level, and brackish waters, near the bottom.
rules for the white-eye
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.
It is a small, fragile fish: handle it with wet hands and return it to the water quickly, without holding it for long.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00389, b = 3.12; 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: Oxyzygonectes dovii (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Oxyzygonectes doviiNames by country and language.
similar species
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: