giant grenadier
Albatrossia pectoralis · Macrouridae · predator
Very deep-water fish of the North Pacific, reaching 210 cm. It is of commercial interest and is not a target of sport fishing.
Also called: granadeiro-gigante, giant grenadier
- maximum
- 210 cm
- record/max.
- 86.0 kg
- depth
- 700–1,100 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 giant grenadier
who is the giant grenadier
The giant grenadier belongs to the family Macrouridae and reaches 210 cm, weighing up to 86 kg. It lives on the bottom of deep waters, generally between 700 and 1,100 m, in the North Pacific, from Japan to Alaska and northern Baja California, Mexico. Juveniles live partly in the water column and move to the bottom when they reach 50 to 60 cm. Adults mainly eat cephalopods, fish and shrimp. It is a species of commercial interest and is not a target of sport 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 giant grenadier; in the meantime, see the similar species.
fun facts
- It can live up to 56 years, according to records for the species.
identification
Elongated fish, gray-brown on the head and body, with each scale having a clearly marked dark edge. The snout is low and projects slightly beyond the large mouth. The mouth and gill cavity are black inside, and the fins and lateral line are darker than the body.
where found
In Latin America it occurs in northern Baja California, Mexico, over the deep-water Pacific slope.
Habitat: Slope and very deep bottoms, between 700 and 1,100 m.
rules for the giant grenadier
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.
It poses no danger to anglers. As a deep-water fish, it suffers barotrauma when brought up quickly, so if caught, release it carefully.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00089, b = 3.25; 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: Albatrossia pectoralis (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Albatrossia pectoralisNames 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: