Actinopteri (ray-finned fishes) > Ovalentaria/misc
() > Plesiopidae
(Roundheads) > Plesiopinae
Etymology: Plesiops: Greek, plesios = near + Greek, ops = appearance (Ref. 45335); nigricans: Specific name apparently referring to the dark color of the species. More on author: Rüppell.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; depth range 5 - 30 m (Ref. 9710), usually 5 - 30 m (Ref. 27115). Tropical; 24°C - 28°C (Ref. 27115)
Western Indian Ocean: apparently restricted to the waters of Gulf of Aden and the Red Sea.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 17.0 cm TL male/unsexed; (Ref. 11441)
Adults inhabit coral reefs. they hide in holes during the day (Ref. 9710). Eggs are guarded by the male parent (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Benthic spawner (Ref. 31409). Eggs are guarded by the male parent (Ref. 205).
Mooi, R.D., 1995. Revision, phylogeny, and discussion of biology and biogeography of the fish genus Plesiops (Perciformes: Plesiopsidae). Life Sci. Contrib. No. 159, 108 p. (Ref. 27772)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.3 - 29.3, mean 27.3 °C (based on 280 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01096 (0.00437 - 0.02753), b=2.98 (2.76 - 3.20), in cm total length, based on LWR estimates for this (Sub)family-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.5 ±0.60 se; based on food items.
Resilience (Ref. 120179
): Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low to moderate vulnerability (28 of 100) .