yellowfin notothen
Patagonotothen guntheri
A small notothenia of the cold waters of Patagonia, with yellow fins, mainly taken by commercial fishing.
Also called: nototênia-amarela, nototênia, yellowfin notothen
- maximum
- 25 cm
- depth
- 30–160 m
who is the yellowfin notothen
A fish of the family Nototheniidae, with a spindle-shaped body, reaching 25 cm. It lives on the Patagonian shelf, on bottoms 30 to 160 m deep, and can be found deeper than 250 m. It occurs on the Argentine Patagonian coast, around the Falkland Islands and on the Burdwood Bank in the southern Atlantic. It is part of a group of cold-water fishes of the far south, with several similar species. It is used in commercial fishing and is almost never caught on rod and reel.
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 yellowfin notothen; in the meantime, see the similar species.
fun facts
- Mature females may spawn for the first time at around 3 or 4 years of age.
identification
A yellow-finned fish: the caudal, pectoral and pelvic fins are lemon yellow, and the dorsal and anal fins are yellow, with the tips of all fins paler. The body is spindle-shaped. In the same region lives the Magellanic notothenia, which reaches 43 cm and is olive gray with a yellowish belly.
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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.
Essential profile: the index uses a general fish model (weather, sun, moon and tide), without a season or time of day specific to this species.
where found
It lives on the Argentine Patagonian coast, around the Falkland Islands and on the Burdwood Bank.
Habitat: Patagonian shelf, on bottoms 30 to 160 m deep.
rules for the yellowfin notothen
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 is not dangerous. Hold it by the body, with wet hands, and release it quickly.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00501, b = 3.21; 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: Patagonotothen guntheri (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Patagonotothen guntheriNames by country and language.
