Breeding Journal DataSheet
This first post should be updated regularly to include new information as events take place or changes are made to your system
General Species: Dascyllus aruanus, Three Stripe Damselfish Social Structure: pair
Size of Individuals: about 3.5 inches
Age of Individuals: unknown
Date added to Tank: 4/5/14
Broodstock Tank Details Size of Tank: 20 gallon high
Substrate Details: sand bed, well established
Filtration Details: live rock in sump
Water Changes: 10 % weekly
Water Temperature: 80 F
Lighting: ambient, under cabinet fluorescent lights.
Lighting Cycle: 14 hours day, 10 hours night
Other Tank Inhabitants: none
Broodstock Feeding Details Food Types: frozen mash of shrimp, spirulina, krill, fish, scallops, etc. Also frozen fish eggs with algae, Hikari mysis, a little flake . Not all foods fed at each feeding. I switch it up.
Feeding Schedule: twice daily
Spawning Details Date of First Spawn: 4/8 or 4/9 not sure ,
Spawn Time of Day:Initially, eggs noticed in the morning of the ninth. Subsequent spawns occur early, just after lights come on.
Dates of Consecutive Spawns: 4/13, 4/18,
4/24, every 5-6 days mostly. 8/5 , 8/1/15
Courtship Details: Not sure who is female, who is male. One very aggressive fish, presumed male, hides except for attacking the other one. The other one cowers in the corner. Sometimes she swims down to the aggressive one. Scared one loses color in the facial area, whereas the aggressive one looks normal. Aggressive one tends the eggs, (but not very much) so perhaps it is the male. Subesquent thoughts concur. After a while, these two appear to get along OK for the mos part. Female is not stressed, fins are intact.
Egg Size: Ultra tiny: approximately 0.5mm diameter
Egg Color: clear to slight yellow
Egg Count: about a thousand. Its amazing. Hatch Details Hatch Date: 4/27/14 , and thereafter 2.5 days after spawn.
Hatch Time of Day: night
# Days after Spawn: 3.5
Larvae Description: 1.5-2mm long, clear, clear eyes, undeveloped mouth
Consecutive Hatch Dates: 4/11/14, 4/16, 4/21 , 8/4/15
Larval Tank Details Temperature: 78F
Size of Larval Tank: 17 gallon BRT, filled to about 10 gallons
Substrate Details: none
Other Tank Decor: none
Filtration Details: airstone and heater
Lighting: compact fluorescent clamp light
Lighting Cycle: 14 hours day, 10 hours night
Water Changes: none at first
Larval Feeding Details Food Types: Initially: rotifers, ciliates, P. crassirostris nauplii, O. marina, live Isochrysis, RGgreen
Feeding Schedule: continuous
Metamorphosis/Settlement Date of Settlement Start: Days after Hatch: Date of Settlement End: Description of Fry:
Grow-Out Tank Details Temperature: Size of Grow-Out Tank: Substrate Details: Other Tank Decor: Filtration Details: Lighting: Lighting Cycle: Water Changes: Size at Transfer: Age at Transfer: Grow-Out Feeding Details Food Types: Feeding Schedule: Additional Information Spawn is a bit loose, meaning the eggs are not tightly next to each other for the most part, but covers about 1/3 of the outside area of a 4 inch diameter clay pot. The pot is covered with eggs on the shadowed side, not on the well lit side.
(No Pictures or Videos in the Section Please) Miscellaneous Information: Controlled Breeding and Larval Rearing Techniques of Damsel Fishes
G. GOPAKUMAR1*, BOBY IGNATIUS2, I. SANTHOSI1 and N. RAMAMOORTHY1
Asian Fisheries Science 22 (2009): 797-804
http://eprints.cmfri.org.in/5727/1/11.pdf Danilowicz, Bret S. and Brown, Christopher L. 1992. Rearing methods for two damselfish species:
Dascyllus albisella and
D. aruanus. Aquaculture 106: 141-149
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<message edited by KathyL on Wednesday, August 5, 2015 8:42 AM>