Actinopteri (ray-finned fishes) > Polymixiiformes
(Beardfishes) > Polymixiidae
Etymology: Polymixia: Greek, poly = a lot of + Greek, myxos = mucus (Ref. 45335). More on author: Lowe.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathydemersal; depth range 100 - 770 m (Ref. 7412), usually 360 - 540 m (Ref. 7412). Deep-water; 0°C -
Eastern Atlantic: Azores, Madeira, the Canary Islands, Cape Verde and St. Helena Islands. Western Atlantic: West Indies, Saba Bank, Leeward Islands, off northern coast of Cuba and west of the Bahamas. Reported to occur in the northern coast of South America (Ref. 5217).
Length at first maturity / Size / Weight / Age
Maturity: Lm 26.0, range 20 - ? cm
Max length : 48.0 cm TL male/unsexed; (Ref. 5217); common length : 30.0 cm TL male/unsexed; (Ref. 7412); max. reported age: 14 years (Ref. 88061)
Found on semi-hard and soft bottoms on the continental shelf and slope. Marketed fresh and frozen.
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Hureau, J.-C., 1990. Polymixiidae. p. 625. In J.C. Quero, J.C. Hureau, C. Karrer, A. Post and L. Saldanha (eds.) Check-list of the fishes of the eastern tropical Atlantic (CLOFETA). JNICT, Lisbon; SEI, Paris; and UNESCO, Paris. Vol. 2. (Ref. 7412)
IUCN Red List Status (Ref. 124695)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 8.4 - 15.3, mean 11.4 °C (based on 187 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5029 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.00933 (0.00705 - 0.01235), b=3.10 (3.02 - 3.18), in cm total length, based on LWR estimates for this species (Ref. 93245
Trophic level (Ref. 69278
): 4.2 ±0.73 se; based on food items.
Generation time: 6.9 ( na - na) years. Estimated as median ln(3)/K based on 2 growth studies.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Assuming tm=2-4).
Vulnerability (Ref. 59153
): Moderate vulnerability (43 of 100) .
Nutrients (Ref. 124155
): Calcium = 30.1 [16.3, 62.6] mg/100g ; Iron = 0.367 [0.215, 0.621] mg/100g ; Protein = 17.5 [16.4, 18.6] % ; Omega3 = 0.309 [0.165, 0.563] g/100g ; Selenium = 23.9 [10.6, 48.8] μg/100g ; VitaminA = 17.4 [4.7, 58.6] μg/100g ; Zinc = 0.379 [0.266, 0.545] mg/100g (wet weight);