Shenandoah Aquatics Posted March 24, 2021 Share Posted March 24, 2021 I am breeding Cauliflower Swordtails and some of the offspring are short fin. Will they carry the long-fin gene and potentially carry it on in future breeding? Link to comment Share on other sites More sharing options...
Biotope Biologist Posted March 24, 2021 Share Posted March 24, 2021 The babies will not develop the fins until maturity. Depending on the breed you may see variation amongst females and males. I do not have specific experience with that breed. They are pretty though. Link to comment Share on other sites More sharing options...
Shenandoah Aquatics Posted March 24, 2021 Author Share Posted March 24, 2021 You can see that some of the fry have short fins and some have long fin. They are around 3 months old now. The fry with long fin is very noticeable. Link to comment Share on other sites More sharing options...
Fish Folk Posted March 24, 2021 Share Posted March 24, 2021 Hat tip to "Dan's Fish" YouTube Channel for info on these. Based on the chart below, the genetics looks like this: Hh + hh = 50 / 50 Highfin and lowfin. Hh + Hh = 50 Highfin / 25 lowfin / 25 die-off (the HH genetic trait is unstable, and the fish will die) 3 Link to comment Share on other sites More sharing options...
Biotope Biologist Posted March 24, 2021 Share Posted March 24, 2021 Well there you have it! That makes sense then that you have heterozygotes. This would have been a way cooler experiment in a genetics class than boring snapdragons. 2 Link to comment Share on other sites More sharing options...
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