graery threadfin seabass
Cratinus agassizii
Grouper of mangroves and shallow coves of the eastern Pacific, from Ecuador to southern Peru, reaching 60 cm. It is taken in commercial fishing.
Also called: cherne-filamentoso, plumero, baulerio, gancia, graery threadfin seabass
- maximum
- 60 cm
- depth
- 1–12 m
who is the graery threadfin seabass
Of the family Serranidae. It reaches 60 cm and lives in mangrove areas and in shallow coves and bays, from 1 to 12 m, in the eastern Pacific, from Ecuador to southern Peru. It has an elongated, slightly compressed body, with some dorsal fin spines very long and filament-like, which give it its common name. These long spines, reddish brown in color, are the most striking feature of the species. The species also appears in the central eastern Pacific. It is taken in commercial 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 graery threadfin seabass.
identification
Elongated, slightly compressed body, light brown on the back and pale belly. The pectoral fins and the dorsal spines are reddish brown, and some dorsal spines are very long, filament-like. It lives in mangroves and shallow coves, which separates it from reef species.
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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
Lives in the eastern Pacific, from Ecuador to southern Peru, in mangroves and shallow coves. In Latin America, it ranges from Ecuador to southern Peru.
Habitat: Mangroves and shallow coves, from 1 to 12 m.
rules for the graery threadfin seabass
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 has been recorded, but the long dorsal spines call for care when handling it.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.01072, b = 3.06; 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: Cratinus agassizii (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Cratinus agassiziiNames by country and language.