Actinopteri (ray-finned fishes) > Ovalentaria/misc
(Various families in series Ovalentaria) > Pomacentridae
(Damselfishes) > Pomacentrinae
Etymology: Chromis: Greek, chromis = a fish, perhaps a perch (Ref. 45335); pacifica: Named for its native range, in the Pacific Ocean; noun in apposition.
Environment: milieu / climate zone / depth range / distribution range
Marine; reef-associated; non-migratory; depth range 5 - 56 m (Ref. 122787). Tropical; 31°N - 30°S
Pacific Ocean: Hawaiian Islands, Johnston Atoll, Line Islands, Pitcairn Island, Oeno Atoll, Gambier Islands, Tuamotu Archipelago, Society Islands, Austral Islands, Rapa, Cook Islands, Phoenix Islands, Fiji, Tonga, New Caledonia, Loyalty Islands, Chesterfield Islands, Vanuatu, Coral Sea islands and reefs, Marshall Islands, Chuuk, Pohnpei, Yap, Wake Island, Mariana Islands, and at the Ogasawara Islands and Bonin Islands of Japan.
Size / Weight / Age
Maturity: Lm ?  range ? - ? cm
Max length : 7.6 cm SL male/unsexed; (Ref. 122787)
soft rays: 12 - 14;
Vertebrae: 26. This species is distinguished by the following set of characters: D XII,12-14 (usually XII,13); A II,12-14 (usually II,13); pectoral-fin rays 16-18 (usually 17); spiniform caudal-fin rays 2; tubed lateral-line scales 14-17 (usually 15-16); total gill rakers on first branchial arch 27-32; body depth 1.8-2.0 (mean 1.9) in SL. Colouration: in life overall yellowish brown, typically with lateral greyish to purplish stripes along scale rows; the dorsal and anal fins are brownish with dark-brown triangular marking posteriorly and caudal fin yellowish; pectoral fin with a prominent round, blackish spot covering the entire base and axil (Ref. 122787).
Benthopelagic (Ref. 58302). Feeds on planktons (Ref. 89972). Diurnal species (Ref. 54980; 113699). Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Life cycle and mating behavior
Maturity | Reproduction | Spawning | Eggs | Fecundity | Larvae
Oviparous, distinct pairing during breeding (Ref. 205). Eggs are demersal and adhere to the substrate (Ref. 205). Males guard and aerate the eggs (Ref. 205).
Allen, G.R. and M.V. Erdmann, 2020. Chromis pacifica, a new Pacific Ocean damselfish distinct from Indian Ocean Chromis agilis (Teleostei: Pomacentridae). J. Ocean Sci. Found. 35:102-117. (Ref. 122787)
IUCN Red List Status (Ref. 123251)
CITES (Ref. 123416)
Threat to humans
Fisheries: of no interest; aquarium: commercial
ReferencesAquacultureAquaculture profileStrainsGeneticsAllele frequenciesHeritabilityDiseasesProcessingNutrientsMass conversion
Estimates based on models
Preferred temperature (Ref. 115969
): 24.6 - 28.8, mean 27.4 °C (based on 376 cells).
Phylogenetic diversity index (Ref. 82805
= 0.5000 [Uniqueness, from 0.5 = low to 2.0 = high].
Bayesian length-weight: a=0.01738 (0.00785 - 0.03846), b=3.00 (2.83 - 3.17), in cm total length, based on LWR estimates for this Genus-body shape (Ref. 93245
Trophic level (Ref. 69278
): 3.0 ±0.24 se; based on food items.
Resilience (Ref. 120179
): High, minimum population doubling time less than 15 months (Preliminary K or Fecundity.).
Vulnerability (Ref. 59153
): Low vulnerability (19 of 100) .