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: PTEKAU-062399-CLAKEI-003

Date received: 6/23/99

Identification: Pterapogon kauderni Koumans, 1933

Geographic origin: Indonesia

Taxonomy: (after I.C.Z.N)

Kingdom: Animalia

Phylum: Chordata

Class: Actinopterygii

Order: Perciformes

Family: Apogonidae

Genus: Pterapogon

Species: kauderni

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

Survival:.

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