twospot lebiasina
Lebiasina bimaculata · Lebiasinidae · omnivore
Freshwater lebiasina from Ecuador and Peru, reaching 16 cm. It helps control mosquitoes and is occasionally used as bait.
Also called: lebiasina-de-duas-manchas, guaija-zumba, guavina, huaija, twospot lebiasina
- maximum
- 16 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 twospot lebiasina
who is the twospot lebiasina
The two-spot lebiasina is a freshwater fish of the family Lebiasinidae, reaching 16 cm. It occurs west of the Andes, in Ecuador and Peru, and also in the Marañón River basin, in tropical water at 22 to 26 °C. It lives in the midwater and near the bottom. Like other lebiasinas, it gulps air at the surface when oxygen runs low. It helps control mosquitoes, is sold for aquariums and is occasionally used as bait. It has commercial 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 twospot lebiasina; in the meantime, see the similar species.
identification
Small, elongated fish of the family Lebiasinidae, reaching 16 cm. Its most distinctive feature is the two dark spots on its body, which give it its name. It can be confused with Lebiasina astrigata, which lives in northern Ecuador in the same region and also reaches 16 cm, but has a series of round spots on the flank instead of two.
where found
Ecuador and Peru, west of the Andes, including the Marañón River basin, in freshwater.
Habitat: Tropical waters west of the Andes, in Ecuador and Peru, in the midwater and near the bottom.
rules for the twospot lebiasina
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.
No known danger to anglers. Because it is small, handle it with wet hands and release it quickly.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.01122, b = 3.04; 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: Lebiasina bimaculata (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Lebiasina bimaculataNames 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: