Current Scientific Name:
Aphyosemion buytaerti
Described: Radda & Huber, 1978
Common name(s): Buytaert's killifish
Distribution: Republic of Congo, Gabon
Some Recorded Strains:
BSWG 97-3

A. buytaerti inhabits small, shallow forest streams with organic debris within which the fish will hide if disturbed.

This is one of the more difficult Aphyosemion species to reproduce, requiring soft, clean water, and lower temperatures.

Breeding Aphyosemion buytaerti

Have you had any experience breeding this species? Why not fill in a species questionaire
2 other fishkeepers have successfully bred this species and left reports, their results are sumarised below

Long term (fry appear with adults) (50%)
Spawning Mops (50%)

Water Conditions:
Very soft and acidic (50%)
Moderately soft and acidic (50%)

16-19°C (100%)

Read the full breeding report(s) for Aphyosemion buytaerti


Aphyosemion buytaerti breeding reports

Each record reproduced here represents one instance of breeding this species. Have you kept and bred Aphyosemion buytaerti? Why not add a breeding report? If you had different results, or used different methods, please share your experiences

How to keep and breed Aphyosemion buytaerti

This database consists of breeding reports provided by the world killifish community, along with some statistical analysis. Results provided by successful keepers are aggregated in the bar charts below, with more detailed reports below that. Like any block of data, the larger the more significant. Please contribute a report of your attempt to breed Aphyosemion buytaerti, even if you have had a negative results. You may, of course, file more than one report, particularly if you change some condition, and had a different result.

breeders have filled in breeding reports, a summary of the results are shown in the graphs below.

Would Aphyosemion buytaerti be a good addition to a community tank?

  1. Never
  2. Doubtful, only with VERY calm fish
  3. Only with species of similar size
  4. Yes, a good community fish

How would you describe the disposition of Aphyosemion buytaerti?

  1. Very timid
  2. Slightly timid
  3. Neutral
  4. Somewhat aggressive on occasions
  5. Very aggressive

In which water conditions do you keep these fish?

  1. Very soft and acidic
  2. Moderately soft and acidic
  3. Neutral
  4. Moderately hard and alkaline
  5. Very hard and alkaline

At what average temperature?

  1. 10-15°C
  2. 16-19°C
  3. 20-23°C
  4. 24-27°C
  5. 28°C+

What, if any is the biggest difficulty encountered when breeding these fish?

  1. Poor egg production
  2. Poor egg survival
  3. Poor fry survival rate
  4. Deformities
  5. Skewed sex ratio

How would you describe sex ratios when breeding Aphyosemion buytaerti?

  1. Almost all males
  2. Somewhat male heavy
  3. Roughly equal
  4. Somewhat female heavy
  5. Almost all females

In general, how difficult is Aphyosemion buytaerti to keep and breed?

  1. Very easy
  2. Easy
  3. Average
  4. Difficult
  5. Very difficult

How successful have you been at breeding Aphyosemion buytaerti?

  1. Very unsuccessful
  2. Fairly unsuccessful
  3. Average
  4. Fairly successful
  5. Very successful

Very successful / fairly successful

Breeding Report: Aphyosemion buytaerti
Location code: BSWG 97-3
Water conditions: Very soft and acidic, 16-19oC
Spawning Method: Long term (fry appear with adults)
Sex ratio: Roughly equal
Breeding difficulty: Average
Success: Very successful
Other Comments: I am currently raising A. buytaerti BSWG 97-3. I have three breeding pairs and 50+ fry at the moment (April 2006). I received 6 fry about 8 months ago from Dave Koran's small stock of fry. Dave reports that his stock is very heavy on females, but I wound up with three pairs out of the six fry. The males are very slow to color up, much like A. celiae which it reminds me of. The males have a single horizontal electric blue stripe in the dorsal, with small bands of color in the anal fin. Overall body color is a light yellow. I put the original six fry in a ten gallon tank with a large clump of Java moss and a thick surface cover of giant salvinia. I fed baby brine, frozen bloodworms and live black worms. Fry appeared in the Java moss. I did not pick eggs at all. I recently broke the tank down to put the adults in a new tank setup and the fry in other tanks as quite a few had appeared. I removed 46 fry from the tank at this time. I change 70% of the water every two weeks. Hardness is about 10ppm. Temp ranges from 71 to 77 deg. F. Ph is about 6.5 or so. Regards, Monty Lehmann AKA 2003 Hobbyist of the Year Chesapeake Area Killie Club Virginia, USA
Breeder: Monty Lehmann, USA (AKA) (1 years experience with this species)
Date this record created: 12th April 2006
Breeding Report: Aphyosemion buytaerti
Water conditions: Moderately soft and acidic, 16-19oC
Spawning Method: Spawning Mops
Breeding problems: Skewed sex ratio
Sex ratio: Almost all females
Breeding difficulty: Very difficult
Success: Fairly successful
Other Comments: i have RPC 91/11 not sucessful and BSWG 97/3 sucessful 150 female and 33 males
Breeder: marc bogaerts, AKFB (2 years experience with this species)
Date this record created: 16th January 2004