térraba toothcarp
Brachyrhaphis terrabensis · Poeciliidae · forage fish
A small freshwater fish from the Pacific slope of Costa Rica and Panama, reaching 6 cm. It is listed as a sport fish, but it is too small to matter in practice.
Also called: barrigudinho-do-Térraba, olomina, Térraba toothcarp
- maximum
- 6 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 térraba toothcarp
who is the térraba toothcarp
Fish of the family Poeciliidae, freshwater and midwater, reaching 6 cm. It occurs on the Pacific slope, from the Térraba River to the Chiriquí River, in western Panama. It lives in still water or current of any speed, between 40 and 1,250 m above sea level, mainly in streams of moderate current, at 20 to 23 °C. It eats terrestrial insects that fall into the water. Gestation lasts about 28 days, and females give birth to 10 to 30 young. It is listed as a sport fish but, at 6 cm, it hardly ever turns up on the line.
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 térraba toothcarp.
fun facts
- It reaches sexual maturity between four and five months of age.
identification
Small fish with a straight-cut snout and an anal fin much shorter than the head. The base of the dorsal fin is long. The body has vertical bars, more marked in adults, and in some populations there is a dark band along the body. The rear half of the dorsal fin is yellow or orange, and the margin of the first anal fin rays is orange or red. It lives only on the Pacific slope of Costa Rica and Panama.
where found
Native to the Pacific slope of Costa Rica and western Panama, from the Térraba River to the Chiriquí River. It is not recorded in Brazil.
Habitat: Freshwater, in streams and pools with moderate current, from 40 to 1,250 m above sea level.
rules for the térraba toothcarp
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.
A small, harmless fish. Handle it with a wet hand and release it promptly into the water.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00851, b = 3.15; 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: Brachyrhaphis terrabensis (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Brachyrhaphis terrabensisNames 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: