silver weakfish
Isopisthus remifer
Big-eyed silver croaker, of coastal waters and the lower parts of estuaries of the eastern Pacific, from the Gulf of California to Peru. It has a small commercial catch.
Also called: pescada-de-olho-grande, corvina ojona, corvina mordedora, bigeye corvina
- maximum
- 36 cm
- depth
- 10–60 m
who is the silver weakfish
Fish of the family Sciaenidae, with an elongated, fusiform body, reaching 36 cm. Common size 25 cm. It lives from 10 to 60 m deep, in coastal waters and in the lower parts of estuaries, between the bottom and the water above it, from the Gulf of California and southern Baja California, in Mexico, to Peru. It eats fish, shrimp and cephalopods. The Spanish name, ojona, highlights its large eye. It has a small commercial catch.
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 silver weakfish; in the meantime, see the similar species.
identification
Elongated, fusiform body, typical of croakers, silvery and with large eyes, as the popular names suggest. It lives from 10 to 60 m deep, in coastal waters and in the lower parts of estuaries. It reaches 36 cm, far less than the queen weakfish (Cynoscion albus), at 130 cm, and the scalyfin weakfish (Cynoscion squamipinnis), at 64 cm.
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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
Eastern Pacific, from the Gulf of California and southern Baja California, in Mexico, to Peru, through Central America and Ecuador.
Habitat: Coastal waters and the lower parts of estuaries, from 10 to 60 m deep.
rules for the silver weakfish
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.
Harmless to people. If it comes up in the net or the line, release it quickly and carefully.
how much it weighs without taking it out of the water
Length-weight relationship W = a·Lb (a = 0.00708, b = 3.08; 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: Isopisthus remifer (ficha da espécie)Size, length-weight, depth, habitat, distribution, biology, and IUCN status. Page checked on Oct 13, 2026.
- scientific FishBase: nomes populares de Isopisthus remiferNames by country and language.
