This female has blue on tail fin.
Is it okay to assume that this fish has Japan blue and gene responsible for doublesword(maybe elomgatus )on X chromosome?
Does anyone know how to tell if a female guppy has japanblue gene on x chromosome?
For example, how about the female guppy in the link below?
https://www.shopping-charm.jp/product/2c2c2c2c-2c2c-2c2c-2c2c-2c3137323937