Natural Fry Tank
My Betta palangkarensis pair have given me at least 50 fry from several spawnings that occurred within the span of a couple of weeks. It wasn't until I actually physically separated them that all spawning activity ceased.
Because I had been waiting what seemed like forever for them to spawn, I decided to separate the fry into two groups in case something happened to them. One group was left in the main tank (parents were both removed by this point) , while another smaller group was moved into a more traditional grow-out tank.
As you can see, the water in what I call the 'natural' tank is very dark. The decaying leaf litter (pictured above) has caused an explosion in the growth of infusoria and other microorganisms. This provides a constant source of food for the fry in between feedings, and as I have fry of all different ages in there, it takes some of the pressure off the smaller and younger fry. There's not as much competition for food as there would be in a more traditional grow-out when most of the infusoria is consumed fairly quickly and the fry are much more reliant on regular feedings.
Even when I don't feed the fry in this tank, they almost always have full, rounded stomachs, which shows they are actively hunting and consuming the microorganisms present in the water.
Their growth rate has been fairly consistent and I am starting to see some quite large fry now. They seem to be growing at the same rate (perhaps slightly faster) than the other group, even though they do not receive as large or as frequent water changes.
I have already noticed with my burdigala and uberis fry that those grown out in the tank alongside their parents (even without supplemental feeding) seem to grow at a much faster rate than those raised in a more traditional setting.
Like all coccina complex species, it will be quite a while before they reach adult size. However, I will be charting the progress of both groups as well as that of my other fry, here on this blog.
Hailing from Melbourne, Australia, I currently keep and breed a number of species from the coccina complex.