Pterapogon kauderni PTEKAU-062399-CLAKEI-003
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Breeder ID: PTEKAU-062399-CLAKEI-003
Date received: 6/23/99
Identification: Pterapogon kauderni Koumans, 1933
Geographic origin: Indonesia
Taxonomy: (after I.C.Z.N)
Description: Silver body with distinct black bars and distinct silver/whitespots.
Length of time in captivity: 2 months at time of first spawning
Size male (mm): ~52 mm TL (2″)
Size female (mm): ~52 mm TL (2″)
Broodstock notes: Spawning adults maintained in reef aquarium. Co inhabitants include invertebrates (corals, cleaner shrimp Lysmata wurdemanni) and a single clownfish Amphiprion frenatus, The male releases the fry in the tank and they are then netted out and released to the systems reverse photoperiod refugia/sump. The adults were acquired December 1998. There have been four broods released and a fifth brood is being held by the male at the time of this report. The number of fry released has increased from 15 (1st brood) to 23 (4th brood). The male is reclusive during the brooding period and appears to abstain from regular feeding for the incubation period.
Physical differences: Slightly different head markings permits identification
Adult diet: Frozen adult brine shrimp, 2 – 3 times per day
Pre-spawning activity: Female was observed moving from side to side of male. A fine tremor (shimmying) was observed in the female while on either side of the male
Time spawning began: ~ 1 hour after lights on
Area spawning occurred: not indicated
Frequency of spawning: every 4 – 5 weeks
Egg description: reddish in color
Approximate quantity: ~ 20 – 30 eggs
Size: ~ 2 mm
Egg changes / development: oral incubation
Incubation period: 21 – 22 days
Time hatching occurred: fry released 2 – 3 hours after lights out
Size of hatching larvae: 10 mm
Yolk sac present? no
Newly hatched appearance: Identical to adults with silver/black bars. Silver spots after ~ 1 month
Spawning tank size (liter): ~180 liters (50 gallons); 90 cm L x 45 cm W x 45 cm H (36″ L x 18″ W x 18″ H)
Sides of tank covered? Yes, light blue
Lighting & photo period: 80 watts fluorescent actinic, 12 hours. 350 watts MH 5500K 10 hours~15 cm from surface. Bulb(s) change yearly.
Filtration:Venturi skimmer, live sand, live rock. Reverse photo period refugia/sump. ~ 1800 LPH (~500 GPH) 20% monthly ASW changes.
Additives and dosages: kalkwasser (make-up for evaporation loss)
Specific gravity: 1.026 (hydrometer)
Water temperature (F): 83\F0F , 2\F0F fluctuations
pH: ~8.2 (electronically measured)
Nitrate: non detected
Calcium: ~ 400 ppm (colorometric)
First food offered: Artemia nauplii, three (3) times per day.
Second food offered: frozen daphnia at 2 – 3 months. three (3) times per day.
Survival : 100% survival through 4 weeks. First and second broods experienced losses at week 6. “Fright reaction” (see Marini 1999). The animals markings fade and they drop to the bottom. Juveniles were then moved to sump/refugia with no further losses. Oldest are 4 months old (at time of this report). Juveniles have been given away at 3 months. Juveniles adapt quickly to a new diet of frozen and flake foods.
Rearing tank size (liter): Initially reared in 110 L (30 gallon) tank. See comments under
About this report: Information contained in this report is taken from submitted observations. Taxonomy, Synonomy, Original description , Word origin and Suggested reading are provided by member(s) of The Breeder’s Registry staff. Information is presented under the belief that it is accurate. If you have information in addition to, or contrary to that presented you are encouraged to contact the Breeder’s Registry. Permission is granted for “one-time” personal use. Reproduction as distributed or accessible media is prohibited without prior written permission. All rights reserved. 1999