gar characin
Ctenolucius hujeta · Ctenoluciidae · predator
Mid-water gar characin from the Magdalena and Sinú rivers, in Colombia, and from rivers of Venezuela, up to 26 cm. It has commercial fishing.
Also called: bicuda-do-magdalena, agujeta, aguja, gar characin
- maximum
- 26 cm
- record/max.
- 0.1 kg
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 gar characin
who is the gar characin
The gar characin is a freshwater ctenoluciid, reaching 26 cm and 119 g. It lives in midwater in the Magdalena and Sinú rivers, in Colombia, and in rivers that drain into Lake Maracaibo, in Venezuela. It has an elongated body, with the dorsal and anal fins without spines. The female lays one to three thousand eggs. It has commercial fishing and is displayed in public aquariums. Agujeta and aguja are names used in Colombia.
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 gar characin.
identification
Elongated, slender body, like a needle, with a long snout, and no spines on the dorsal or anal fins. The names agujeta and aguja, used in Colombia, refer to that slender body. The place is the best guide: the Magdalena and Sinú rivers, in Colombia, and rivers of Venezuela that drain into Lake Maracaibo.
where found
Magdalena and Sinú rivers, in Colombia, and rivers that drain into Lake Maracaibo, in Venezuela. Not recorded in Brazil.
Habitat: Midwater of freshwater rivers.
rules for the gar characin
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.
Fish with sharp teeth: handle it with a cloth, remove the hook with pliers, and return it.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00447, b = 3.1; 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: Ctenolucius hujeta (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Ctenolucius hujetaNames 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: