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Zebra/Stripeless Locus

Non-wild alleles at this locus:

Zebra (Z), Stripeless (S)

Possible phenotypes:

  • Ghost (S/+)

  •  Blushing (S/S)

  •  Zebra (Z/+ and Z/Z)

  •  Clown (S/Z)

Ghost (S/+)
Silver Ghost

The ghost phenotype results from a single dose of the partially dominant stripeless allele (S/+).  A single stripeless allele will suppress the expression of stripes in striped varieties such as silver.  In non-striped varieties, the phenotype is only subtly altered, usually with less intense coloration.

Blushing (S/S)
Blue Blushing

The blushing phenotype results from the presence of two Stripeless alleles (S/S). The term “blushing” refers to a pink circular area over the gills in fry and young juveniles.  The gill plate is translucent, so the bright red of oxygenated blood in the gill area shows through as pink.  The gill plate often become opaque as the angelfish matures, and the pink blushing characteristic may no longer be visible.   However other characteristics can be used to identify an adult blushing angelfish.   Unlike the ghost phenotype the fins of a blushing angelfish show no striped patterning. Furthermore the body of a blushing angelfish   often develops random silver-colored patches deposits on its body as it matures, resulting from formation of guanine deposits.    The blushing phenotype can be present in concert with most other phenotypes although in some darker colored angelfish the body shine can be difficult to see. Genetically Blushing and Blue Blushing angelfish are both (S/S), the blue in Blue Blushing simply describes the bluish shine that some angelfish take on.

Zebra (Z/+ or Z/Z)

 The Zebra phenotype results from the presence of either single or double dose of the dominant zebra mutation at the zebra locus (Z/+ or Z/Z). As the name indicates the Zebra phenotype results in the expression of 3-5 vertical stripes on the body of the angelfish in addition to the stripe across the eye. Similar to that seen in ghosts the fins of a zebra angelfish do show some stripped patterning although in the case of zebra, the patterning is sometimes a little spotted.

Clown (S/Z)
 Silver Clown

The Clown phenotype results from the presence of both a single dose of the Stripeless and Zebra mutations at the Zebra locus (S/Z). Clown angelfish have a spotted body pattern resulting from a modification of the zebra phenotype by the stripeless gene. Clown angelfish also show fin patterning similar to that of a Zebra angelfish.  

Interacting Mutations

A number of other mutations can interact with the alleles of the Zebra/Stripless locus

The most predominant interaction seen between the alleles of the Zebra/Stripless locus and the alleles of the Dark locus. Taken together there are a number of popular combinations including Koi, Zebra Lace, and Turquoise Blushing.

Alleles S/+ S/S Z/+ or Z/Z S/Z
D/+ Black Ghost
Turquoise Blushing
Turquoise Blushing
Zebra Lace
Zebra Lace
Clown Black
D/D Black Ghost
Black Ghost
Black Blushing
Black Blushing
Zebra Black
Black Clown
Black Clown
D/Gm or D/g Hybrid Black Ghost Hybrid Black Blushing Zebra Hybrid Black Hybrid Black Clown
Gm/+ Silver Ghost Gold Marble
Silver Gold Marble Blushing
(Blue Koi)
Blue Koi
Zebra Gold Marble Silver clown gold marble
M/+ or M/M Marble Ghost
Marble Ghost
Marble Blushing
Zebra Marble Clown Marble
Gm/Gm or Gm/g Gold Marble Ghost Gold Marble Blushing (Koi)
Gold Marble


Gold Marble Clown
g/g Gold ghost Sunset Blusher
Gold Clown
Sm/+ Smokey Ghost Smokey Blushing
Smokey Blushing
Smokey Leopard
Smokey Leopard
Smokey Leopard Ghost
Sm/Sm Chocolate Ghost
Chocolate Ghost
Chocolate Blushing
Chocolate Blushing
Chocolate Leopard Ghost
h/h Halfblack Ghost
Half Black Ghost
Halfblack Blushing
Half Black Blushing
Zebra Halfblack
Zebra Half Black

Links to more information about zebra locus
Dr. Joanne Norton, FAMA: May 1983, Vol. 6, #5
Dr. Joanne Norton, FAMA: July 1984; Vol. 7, #7
 Dr. Joanne Norton, FAMA: February 1985, Vol. 8, #2
Dr. Joanne Norton, FAMA: May 1989, Vol.12, #5
Dr. Joanne Norton, FAMA: December 1993, Vol. 16, #12

Approved by The Angelfish Society Standards Committee on February 11, 2007.

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Web Team Updated   02/14/2010