Betta Spawn Log : BSL20180305 : HM Blue (M) x HMPK Koi (S)

The male Betta is the last surviving Half-Moon (HM) and oldest Betta in our collection. Historically, the male Betta, due to boredom and limited tank size, it has been biting its own tail for a while. Thus, we've decided to find this male Betta a mate.

Male: HM Blue
Size: Medium
Age: 8+ months
Temperaments: Easily bored.
Size: Medium (3cm body only)
Grade: B

One of the last surviving HM which have gone through several outbreaks and managed to survive. However, too easily get bored and constantly biting its own tail. Although the tail have grown back and the male is getting older, we decided to breed it while

Female: HMPK Koi
Age: 3+ months
Temperaments: Soft and nimble.
Size: Small (2.5 cm body only)
Grade: C

We called her "pimple" as you felt like pinching her eggs like a pimple. Furthermore, the female has the biggest number of eggs we've seen so far in any other female we have. Probably the healthiest female so far as well.

Log Notes
Mating was fast and lots of eggs produced. Gross estimation was roughly around 100-plus. We expected this number will reduce further as the fry grows.

Female was removed as we saw the male Betta shown some aggression towards it. We placed the female in another individual quarantine tank but near the female sorority tank. There was no damage to any of its fins and the mating was less aggressive.

Fry have started to swim freely and growing fast. Interestingly the fry have been following the male Betta where he chased them around and took them back to the bubble nest. Both were in good condition. We have started to feed BBS to the fry. We don't expect much problem from the spawn but expect the surviving rate will be around, on average 30 till 40 due to our chosen spawning method.

Bad news. We can't find any fry in the breeding tank and the male Betta seemed quite depressed and inactive most of the time. There are probably two conclusions. First, water quality of the breeding tanks causing infection to all fry. Second, the male Betta was under stress and ate all the fry. Maybe this was due to a Giant female Betta placed near the breeding tank?

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