My spawn is confusing me a little bit. I purchased a trio of white halfmoon bettas a while back, a plakat pair and a halfmoon long-finned female. Long-story short, I bred the plakat pair and the spawn is about 2.5 months old now. What trumps me is that everyone is short finned, but there is one long-finned sibling zipping in the tank which makes me think I might've accidentally paired the halfmoon long-fin female to the plakat boy.
Also the offspring all look like delta tails at best to me, though the father has really nice form. The only thing about him I wanted to "fix" is the smudges of color on his caudal fin, which so far seems successful since all the offspring are pure-white though I'm getting quite a headache from not seeing any 180 degree spreads in their caudal fins. Is it too early to tell still?
Some of the siblings are still tiny compared to the larger ones, would it be beneficial to the line just to cull the smaller ones? I'm not sure if it's the same case with fish but in mammals a lot of "runts" tend to have other problems that we can't see on the surface.
Here's the link to my spawn log
And here are the babies!
So my questions are:
1) Are these guys Longfin x Shortfin or Shortfin x Shortfin with one random outlier?
2) How in the world am I supposed to sex them if they are Longfin x Shortfin x.x and is there an easy way to sex plakats?
3) What do you think of the form of these babies? I notice some halfmoon females that are floating around don't have full 180 degree spread either, though I personally don't like seeing those labeled as halfmoon. Will these guys gain more spread as they grow/are they considered halfmoons or deltas at this point?
Thanks.. sorry for the fuzzy pictures and the.. short story gone long!