Which Carpa koi breeds come in Preto?

Club breed standards describe Preto for the Carpa Koi.

Carpa koi color

Preto

Solid black pigment. In birds often with a green or purple sheen; on skin, legs, beak, comb and tongue the dark pigment some standards call for.

8 Carpa koi breeds list Preto. It is in a club standard for 4 breeds.

Breed	JNPA
Carpa KoiSanke	Padrão (“black imprints (urushizumi)”)
Carpa KoiShowa	Padrão (“black body (black background)”)
Carpa KoiBekko	Padrão (“black imprints shaped like spots”)
Carpa KoiUtsuri	Padrão (“black body (black background)”)

How Preto can appear or change over an animal's life.