eaton's skate
Bathyraja eatonii · Arhynchobatidae · predator
Skate of the Southern Ocean, with records in southern Chile. It does not occur in Brazil and appears in commercial fishing.
Also called: raia-de-Eaton, raya de Eaton, eaton's skate
- maximum
- 100 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 eaton's skate
who is the eaton's skate
Eaton's skate is a skate of the family Arhynchobatidae, with a flattened body and a disc formed by the pectoral fins. It reaches 100 cm. It lives on the bottom of the Southern Ocean, around the Kerguelen, South Orkney and South Shetland islands, on the Antarctic Peninsula and in the Weddell Sea, with one record in the Ross Sea. It also occurs off the coast of Chile. It is oviparous, and the egg cases have horn-like projections on the shell. It appears in commercial fishing. It does not occur in Brazil.
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 eaton's skate.
identification
Flattened skate with a wide disc and thin tail separated from the disc, like the family's other skates. It lives in polar and subantarctic waters, around islands of the Southern Ocean and in southern Chile, far from Brazilian coasts. It reaches 100 cm and is a polar skate.
where found
Southern Ocean, near the Kerguelen, South Orkney and South Shetland islands, and off the coast of Chile. It does not occur in Brazil.
Habitat: Sea floor in cold waters of the Southern Ocean and southern Chile.
rules for the eaton's skate
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.
Bottom skate, of large size: if it comes on the line, do not lift it out of the water; remove the hook with long-nose pliers or cut the line close and release it with minimal handling. Watch the spines on the back and tail.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00562, b = 3.13; FishBase (relação peso-comprimento bayesiana, estimativa pelo gênero e formato do corpo)). 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: Bathyraja eatonii (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Bathyraja eatoniiNames 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: