Betta Spawn Log : BSL20171231 : HMPK Marble (S) x HMPK Blue (S)

Our first successful breeding project.

Male: HMPK Marble (blue and white)
Age: 3+ months
Temperaments: Active.
Size: Medium (3.0cm body only)
Grade: C

We picked this male Betta of all the male because it was actively building, probably the largest bubble nest of all. Comparing its small size and the bubble nest size, we hoped to increase the probability of successful spawn. When we first bought this male, it's the only male Betta in the aquarium which was actively making a bubble nest in a very small jar. Active, mature adult, and healthy Betta fish build bubble nest all the time.

Female: HMPK Blue
Age: 3+ months
Temperaments: Aggressive
Size: Medium (3.0cm body only)
Grade: C

The female Betta was seen attacking other female within the community tank and we felt maybe this is the right female to start our breeding project.

Log Notes
Setting up the breeding tank. The usual aquarium plant, Indian Almond leave, floating plastic bag, transparent cup for the female Betta, and lastly the male Betta.

We were not sure whether the pair of Betta fish mated successfully, but from the top view, we can see the small fry (black dot) have appeared in the bubble nest. Note that we were using a small plastic bag cover to hold the bubble nest. Once we confirmed mating was successfully, both females (yes, we used both to create some sort of competition between the female Betta to encourage fertilization) were removed from the breeding tank.

The process of "cooking" BBS (Baby Brine Shrimp) as the food source for the hatched fry. It was a trial and error process where sometimes we didn't manage to hatch the shrimp. It was a lot of work and my SO took a lot of time to ensure all the fry were fed correctly.

We extracted the male Betta from the breeding tank. The male seemed very depressed and was inactive for quite some time. Most likely this was post-breeding depression as it was separated from the fry. After this incident, we decided to switch to leave father with fry breeding method.

Right now, all these fishes should be around 2.5-plus years old (see photo below). Therefore, we decided to move all the Betta fishes from the breeding tank to growing tank. Total fish count was 56. We were quite surprised by the number of fishes and initially thought that it should be around 20-plus to 30-plus. These juvenile fishes were quite happy with the additional spaces and were seen busy exploring the whole tank.

The setup of the growing tank was simple: 15 gallons aquarium tank, an air-pump filter (with carbon), Almond leaves extract and leaves, aquarium plants (Amazon Frogbit and Anacharis / Water Weed). We expect to change the water on bi-weekly basis, perhaps 25% changes.

We started to jar all the male Bettas as we noticed they started to fight each others and many were susceptible to damaged fins. How we wish we have more jar available at this hour.

We lost quite a few male and female Bettas from this spawn this month. We were wondering the root cause of infection due to irregular water changes or old age? The former reason sounds reasonable as Betta fish have a typical life span of 1 till 4 years.

1/ Our most successful breeding project. Unfortunately, the both the male or female Betta were not from the best genetic.

2/ While both the parent Betta was HMPK, all the male offspring breeded were HM. We suspected maybe the female Betta was actually a HM. Interestingly, most female Betta followed the genetic of male Betta, most white and light blue coloured.

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