Classification / Names Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa

Teleostei (teleosts) > Centrarchiformes (Basses) > Oplegnathidae (Knifejaws)
Etymology: Oplegnathus: Greek, hoplon = weapon + Greek, gnathos = jaw (Ref. 45335).
More on author: Kner.

Environment: milieu / climate zone / depth range / distribution range Ecology

Marine; reef-associated; depth range 3 - 30 m (Ref. 55763). Tropical

Distribution Countries | FAO areas | Ecosystems | Occurrences | Point map | Introductions | Faunafri

Eastern Pacific: Paita, Peru to Antofagasta, Chile, including the Galapagos Islands (Ref. 5530).

Size / Weight / Age

Maturity: L_m ? range ? - ? cm
Max length : 66.0 cm TL male/unsexed; (Ref. 55763); common length : 30.0 cm TL male/unsexed; (Ref. 55763); max. published weight: 1.6 kg (Ref. 53696)

Usually solitary. Constantly swims over rocky reefs, boulder strewn slopes and along walls. Occurs more commonly in shallow water (Ref. 5227). Feeds on algae and invertebrates (Ref. 28023).

Life cycle and mating behavior Maturities | Reproduction | Spawnings | Egg(s) | Fecundities | Larvae

Main reference Upload your references | References | Coordinator | Collaborators

Merlen, G., 1988. A field guide to the fishes of Galapagos. Wilmot Books, London, England 60 p. (Ref. 5590)

IUCN Red List Status (Ref. 130435)

Data deficient (DD) ; Date assessed: 24 May 2007

CITES

Not Evaluated

CMS (Ref. 116361)

Not Evaluated

Threat to humans

Harmless

Human uses

FAO - Publication: search | FishSource |

More information

Trophic ecology
Food items
Diet compositions
Food consumptions
Food rations
Predators

Ecology
Ecology

Population dynamics
Growths
Max. ages / sizes
Length-weight rel.
Length-length rel.
Length-frequencies
Mass conversions
Recruitments
Abundances

Life cycle
Reproduction
Maturities
Fecundities
Spawnings
Spawning aggregations
Egg(s)
Egg developments
Larvae
Larval dynamics

Distribution
Countries
FAO areas
Ecosystems
Occurrences
Introductions
BRUVS - Videos

Anatomy
Gill areas
Brains
Otoliths

Physiology
Body compositions
Nutrients
Oxygen consumptions
Swimming type
Swimming speeds
Visual pigment(s)
Fish sounds
Diseases / Parasites
Toxicities (LC50s)

Genetics
Genetics
Electrophoreses
Heritabilities

Human related
Aquaculture systems
Aquaculture profiles
Strains
Ciguatera cases
Stamps, coins, misc.

Outreach
Collaborators

Taxonomy
Common names
Synonyms
Morphology
Morphometrics
Pictures

References
References

Tools

Special reports

Check for Aquarium maintenance | Check for Species Fact Sheets | Check for Aquaculture Fact Sheets

Download XML

Summary page | Point data | Common names | Photos

Internet sources

Estimates based on models

Preferred temperature (Ref. 123201): 18.5 - 24.8, mean 21 °C (based on 150 cells).

Phylogenetic diversity index (Ref. 82804): PD₅₀ = 0.5156 [Uniqueness, from 0.5 = low to 2.0 = high].

Bayesian length-weight: a=0.01995 (0.00906 - 0.04395), b=3.01 (2.83 - 3.19), in cm total length, based on all LWR estimates for this body shape (Ref. 93245).

Trophic level (Ref. 69278): 3.9 ±0.2 se; based on diet studies.

Resilience (Ref. 120179): Low, minimum population doubling time 4.5 - 14 years (tmax assumed to be > 10).

Fishing Vulnerability (Ref. 59153): Moderate to high vulnerability (46 of 100).

Nutrients (Ref. 124155): Calcium = 35.8 [18.4, 59.5] mg/100g; Iron = 0.507 [0.296, 0.799] mg/100g; Protein = 19.1 [18.0, 20.2] %; Omega3 = 0.0995 [, ] g/100g; Selenium = 35.3 [20.7, 63.4] μg/100g; VitaminA = 38.2 [11.5, 122.6] μg/100g; Zinc = 0.811 [0.567, 1.171] mg/100g (wet weight);

Back to Search

Random Species

Oplegnathus insignis (Kner, 1867)