A- Peppermint male x Ruby red female: 100% F1 looked like the mother (Ruby red) This is a full-white Peppermint male swordtail. He used to have red pigment on half of the body, but the red pigment was gradually suppressed, thus he turned out to be a full-white individual. He was crossed to 2 Ruby red females to test if the traits is recessive to normal red color. Both results harvested 100% red offspring. All are well developed and totally look the same as their mom. No red pigment suppression is found along their development up to 3.5 months (some of the juveniles mature to be males at this age). So, the trait [peppermint] is recessive. (See the video below to better view the male's color. He's so fast to be caught in my phone camera.) In this case, I hypothesize that the RPS [Red Pigment Suppressor] gene required a homologous pair to express. As a matter of fact, the backcross of F1 to its father should express peppermint trait in F2. In case of the father didn't survive during the breeding project, I will interbreed F1 individual to each other (3 pairs) with the hope to reproduce the RPS trait in F2.
1 Comment
Jeff Taylor
4/6/2018 12:55:14 pm
Interested in fancy swordtails, mainly alpha red swordtails
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AuthorDay by day, night by night, my hobby keeps surviving in limited time and space, but never stop! Categories
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