bluenose warehou
Hyperoglyphe antarctica · Centrolophidae · predator
Large, dark fish of deep slope waters, usually at 260 to 490 m, reaching 1.4 m. In Argentina it is caught mainly by the commercial fleet and almost never shows up on a line.
Also called: xaréu-focinho-azul, rufo antártico, bluenose warehou
- maximum
- 140 cm
- record/max.
- 63.0 kg
- depth
- 260–490 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 bluenose warehou
who is the bluenose warehou
Fish of the family Centrolophidae, with a fusiform, dark body, reaching 1.4 m and 63 kg. The common size is about 60 cm. It lives near the bottom, between 40 and 1,500 m, usually at 260 to 490 m, and is most common near rocky areas, along canyon edges and steep drop-offs. By day it stays near the bottom, and at night it rises in the water column to feed. It eats pelagic tunicates, squid, crustaceans and fish, from small lanternfish to large fish. Juveniles stay at the surface, sometimes near floating debris. In the region, it is caught mainly by the commercial fleet.
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 bluenose warehou; in the meantime, see the similar species.
fun facts
- It feeds mainly on the tunicate Pyrosoma atlantica, which stays near the bottom by day and spreads through the water column at night.
identification
Fusiform body of normal shape, dark all over, from very dark gray to nearly black. To tell it apart from Seriolella caerulea, which lives in the same waters, look at size and color: this species is all dark and reaches 1.4 m, while the other reaches 65 cm. Depth also helps: this species stays deeper, usually between 260 and 490 m, and juveniles rise close to the surface.
where found
In Latin America, it occurs off the coast of Argentina, in the southwest Atlantic, in deep waters. Outside the continent, it appears in South Africa, New Zealand and Australia.
Habitat: Irregular bottoms and the edges of canyons and slopes, most common between 100 and 300 m, with juveniles at the surface.
rules for the bluenose warehou
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. As it comes from great depth, it suffers barotrauma if raised quickly, so if returned, release it as deep as possible.
in the kitchen
It goes to market fresh and frozen, and part is exported to Japan for sashimi. It is also eaten steamed, fried, grilled or baked.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00891, 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: Hyperoglyphe antarctica (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Hyperoglyphe antarcticaNames 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: