Graery threadfin seabass (Cratinus agassizii)

Scientific name: Cratinus agassizii Steindachner, 1878

The Graery threadfin seabass (Cratinus agassizii) is a marine fish of the family Serranidae. Native range: Eastern Pacific, Ecuador to southern Peru. Also in the Eastern Central Pacific.

Biology

Body elongate, not very deep, and little compressed; upper jaw lacking supramaxilla; teeth firmly placed; not folding back; lower branch of first gill arch with 12 to 15 gill rakers; 3 or 4 dorsal fin spines prolonged and filamentous; pelvic fins inserted slightly behind pectoral fins; anal fin with 7 soft rays; back light brown; belly pale; pectoral fins and prolonged dorsal spines reddish brown.

Source: FishBase, licensed CC BY-NC 4.0.

Species facts

Scientific name: Cratinus agassizii
Family: Serranidae (Sea basses: groupers and fairy basslets)
Order: Perciformes (Perch-like fish)
Class: Actinopterygii (Ray-finned fishes)
Maximum length: 60.0
Common length: 30.0
Depth range: 1–12 m (3–39 ft)
Environment: Marine; demersal; depth range 1 - 12 m
Climate: Tropical
Distribution: Eastern Pacific: Ecuador to southern Peru. Also in the Eastern Central Pacific.
Conservation status (IUCN): Near Threatened (NT)
Threat to humans: Harmless
Uses: Fisheries: commercial
Resilience: Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Sources

Taxonomy, distribution and biology data: FishBase (Froese, R. and D. Pauly, eds.), licensed CC BY-NC 4.0.

Last updated 27 September 2026