atlantic rubyfish
Erythrocles monodi · Emmelichthyidae · forage fish
Jack of sand and mud bottoms, between 90 and 300 m, caught mainly by the commercial fleet. It has little importance for sport fishing.
Also called: xaréu-rubi, conoro, pez rubí, atlantic rubyfish
- maximum
- 65 cm
- depth
- 90–300 m
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 atlantic rubyfish
who is the atlantic rubyfish
Fish of the family Emmelichthyidae, the rovers (peixes-rubi), reaching 65 cm. It lives near the bottom, over sand and mud, between 90 and 300 m, on the shelf and slope, and the common size is about 40 cm. It occurs in the western Atlantic, from South Carolina to the Bahamas and Venezuela, and also in the eastern Atlantic, from Senegal to Angola. It feeds on larger zooplankton. It is a commercial catch and is almost never seen in rod 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 atlantic rubyfish; in the meantime, see the similar species.
identification
Fish of the family Emmelichthyidae, the rovers (peixes-rubi), with an elongated body, living near sand and mud bottoms between 90 and 300 m. Size is the best clue for telling it apart from the red rover (Emmelichthys ruber), which reaches 30 cm, while this one reaches 65 cm. As both species live in similar depth ranges, check the length of the fish before deciding.
where found
In Latin America, it occurs in Mexico, Colombia and Venezuela, over sand and mud bottoms, and also in the North American Atlantic and the Bahamas.
Habitat: Sand and mud bottoms of the shelf and slope, between 90 and 300 m.
rules for the atlantic rubyfish
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 danger to the angler. It lives on bottoms of 90 to 300 m, and rapid ascent causes barotrauma, so release calls for care.
in the kitchen
Sold fresh or frozen, and also made into fishmeal and fish oil.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.01072, b = 3.07; 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: Erythrocles monodi (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Erythrocles monodiNames 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: