The gene that causes
"gold" or more accurately "New Gold" is an allele of "Dark",
"Marble" &"Gold Marble". New gold is recessive to it's
wild type allele. This fish may be described genetically as g/g.
Although recessive, in the homozygous condition "New Gold" is epistatic (suppresses the effect) of Zebra, Half black & Smokey. Combining a homozygous new gold with Platblue (pb) gene also in homozygous condition results in a platinum angel.