Classification / Names
Common names | Synonyms | Catalog of Fishes(genus, species) | ITIS | CoL | WoRMS | Cloffa
Actinopteri (ray-finned fishes) > Scombriformes
(Mackerels) > Caristiidae
Etymology: Platyberyx: Name from the Greek 'platy' meaning flat and Beryx, a genus of beryciform fishes.; pietschi: Named for Dr. Theodore W. Pietsch.
Environment: milieu / climate zone / depth range / distribution range
Marine; bathypelagic; depth range 1 - 750 m (Ref. 94277), usually - m (Ref. ). Tropical; 0°C -
Central Pacific, Southwestern Pacific and Northwestern Atlantic.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 9.3 cm SL male/unsexed; (Ref. 94277)
Morphology | Morphometrics
soft rays: 18 - 19;
Vertebrae: 33 - 35. This species is distinguished from its congeners by having an anteriorly directed hook-like process on the third posteriormost ventral procurrent caudal ray; differs from P. paucus by having greater number of dorsal-fin rays (30-31 vs. 24-26), anal-fin rays (18-19 vs. 15-16), pectoral-fin rays (17-18 vs. 16-17), and vertebrae (33-35 vs. 31); differs from P. andriashevi by having fewer dorsal-fin rays (30-31 vs. 31-37), anal-fin rays (18-19 vs. 19-22), and vertebrae (33-35 vs. 36-39); differs further from P. opalescens by having small bristles and larger spikes on the gill rakers (vs. small bristles only), and from P. rhyton and P. mauli by the greater prepectoral (>39% SL vs. <36% SL) and prepelvic (>36% SL vs. <33% SL) length, shorter dorsal-fin base (<70% SL vs. >75% SL), and smaller mouth (upper jaw extending to midorbit vs. posterior margin of orbit) (Ref. 94277).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Stevenson, D.E. and C.P. Kenaley, 2013. Revision of the manefish genera Caristius and Platyberyx (Teleostei: Percomorpha: Caristiidae), with description of five new species. Copeia 2013(3):415-434. (Ref. 94277)
IUCN Red List Status (Ref. 124695)
Threat to humans
Common namesSynonymsMetabolismPredatorsEcotoxicologyReproductionMaturitySpawningSpawning aggregationFecundityEggsEgg development
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 13.2 - 23.6, mean 19 °C (based on 13 cells).
Phylogenetic diversity index (Ref. 82805
= 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
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Vulnerability (Ref. 59153
): Low vulnerability (10 of 100) .