Actinopteri (ray-finned fishes) > Acropomatiformes
(Oceanic basses) > Pempheridae
Etymology: Pempheris: Greek, pempheris = the name of a fish (Ref. 45335); ypsilychnus: The specific name is a combination of ypsilon, the Greek letter Y, and lychnos, Greek for lamp or light (Ref. 27767). This combination alludes to the Y-shaped posterior organ that is visible through the body wall (Ref. 27767)
Environment: milieu / climate zone / depth range / distribution range
Marine; demersal; depth range 1 - 24 m (Ref. 27767), usually - m (Ref. ). Tropical; 0°C -
Indo-West Pacific: northern Australia. The southernmost record on the east coast, Moreton Bay near Brisbane, which was reported as Pempheris klunzingeri was a misidentification.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 12.1 cm SL male/unsexed; (Ref. 27767)
Inhabits coral reef (Ref. 75154).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Mooi, R.D. and R.N. Jubb, 1996. Descriptions of two new species of the genus Pempheris (Pisces: Pempherididae) from Australia, with a provisional key to Australian species. Records of the Australian Museum 48:117-130. (Ref. 27767)
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
): 24.6 - 29.3, mean 28.1 °C (based on 1088 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01549 (0.00651 - 0.03684), b=3.00 (2.79 - 3.21), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.4 ±0.5 se; based on size and trophs of closest relatives
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (23 of 100) .