I always admire those breeders who possess Hi-fin Albino Koi swordtail, so I decided to start a project on my own to transfer Hi-fin trait onto my Albino Koi swordtail line. At the moment I wrote this post, I am having a hi-fin female in hand. She's dark red, black eyes, about 6 months old, strong and active just like her mother [♀: HhPP] and her partner, a huge male albino bright red, unknown age [♂: hhpp]. So, this cross would likely bring me 50% Hi-fin albino carrier [F1: 50% HhPp - 50% hhPp]. I will select 10 hi-fin from their offspring and perform an interbreed to create a new generation F2 with genotype: [Hhpp] / phenotype albino hi-fin swordtail. Breeding scheme and result: P: ♀: HhPP ♂: hhpp F1: Expecting result 50% HhPp - 50% hhPp More than 20+ frys (F1.0) were collected on Jan 1st, 2016 100% phenotype is black eye, orange - gray color [Pp]. Very minimal dead at birth (only 2 recorded), other 2 with air bladder syndrome. Frys are active, well eating pattern, and good growth rate. The mother is really a hungry fry-eater. Second batch would likely be dropped within 3 weeks. [Another male (very old, small size, hi-fin, dark red) have been matching with this mother on Jan 17, 2016. The 3rd and 4th batch will be compared to the 1st and 2nd about growth rate, color pattern, and hi-fin ratio. I hope this slow old male would be successful in passing on his traits to help me understand more about coloration. (This scheme was discontinued because the female died during laboring of her 2nd delivery, so I won't have a chance to expect the 3rd and 4th batch as describing above. Sadly!)] Update on June 25, 2016: So, on the video clip below, the 3rd tank to the right is those offspring of the parents above (both parents are now deceased). Within both batch's population, I collected about 15 individuals with high fin traits (the tip of dorsal fin showed). All are albino carriers with black eyes, slightly dark red (color still develop over the time, may turn to dark red when the fishes get older), healthy (no death along their development) and very active. They were born around winter time, so I wouldn't expect their size to be huge as the parents soon because developmental rate is usually much slower for those born and raise in lower than optimal temperature. The F1 HhPp [Hh: High fin (het.), Pp: Albino carrier] interbred should yield 50% albino and 50% wild type in F2. And I plan to save those best albino high fin individuals to strengthen the line of Albino blood red. Those wild type high fin, on the other hand, are good for any red swordtail project.
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