The Breeder's Registry© Information contained in this report is taken from submitted observations from aquarist unless noted otherwise (see comments). Information may be reproduced providing the Breeder's Registry is cited.
Breeder ID: CENARG-072493-MCCJIM-003 Date received: 7/24/93
Identification:
Kingdom Animalia
Phylum Chordata
Subphylum Vertebrata
Class Osteichthyes
Order Perciformes Superorder Teleostei
Family Pomacanthidae
Genus Centropyge
Species argi (Woods & Kanazawa, 1951)
Duration male(yr): 5.0 Size male (mm): 89 Duration female 1 (yr): 5.0 Size female 1 (mm): 76
Broodstock notes: can be paired in tanks as small as 10 liters
Physical differences: Male is larger
Adult diet: Anything!
Pre-spawning activity: Soaring continues approximately 3 hours in evening
Time spawning began: twilight (PM Area spawning occurred: upper levels near surface
Frequency of spawning: nightly Egg description: pelagic
Approximate quantity: 175 - 200 Size: ~ 1 mm
Egg changes / development: short incubation, hatch next day
Incubation period: 17 - 18 hours Time hatching occurred:
Size of hatching larvae: 1.5 mm Yolk sac present?: yes
Newly hatched appearance: Only a slender lateral spine and yolk sac visible
Transfer / removal method: not indicated
Spawning tank size (liter): multiple tanks >10 Sides of tank covered? No
Lighting & photoperiod: Metal halide, fluorescents, spots. 16 hours controlled by timer
Filtration: liverock, wet/dry, cannister
Additives and dosages: none
Water temperature (F): 74 Specific gravity: 1.022 pH: 8.2 Nitrate: 0.15 ppm
Fry development / changes: not indicated
First food offered: dinoflagellates, ciliates, rotifers
Second food offered: egg yolk, greenwater
Survival 1st week(%): 2nd week: 0%
Development description: No success beyond 9 days
Rearing tank size (liter) varied Sides of tank covered? No
Lighting & photoperiod: various types and periods
Filtration: none
Additives and dosages: none
Water temperature (F): varied Specific gravity: 1.022 pH: not indicated Nitrate: none detected
Comments: No other information provided
Word origin: Centr, -I, -o (Greek). The center; a point, spur. pygm, (Greek) dwarf. The common name "Pygmy" or Dwarf" angel is apparent from the word root pygm. Centro may be in reference to the spine (spur) at the angle (The center) of the preopercle. The genus argi has two possible word roots; arg, -o (Greek) shining, bright, or argi, =a (Greek) Idleness, leisure. Since this species is not brilliantly colored (nor silvery) the latter word root would seem more appropriate and may be a reference to activity. Additionally roots listed with an possible ending preceeded by an equal ( = ) sign may be used alone.
The common name is Cherubfish or Dwarf Angelfish
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