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Black Blushing (Black Velvet)
Multiple Locus Phenotype

 Non-wild alleles that interact to form this phenotype:
Dark (D),
Stripeless (S)

  Black Blushing

 A black blushing angelfish is a homozygous black (double dark) or a hybrid black angelfish with two alleles for stripeless.   The dark allele can be paired with another dark allele, or with gold (g), gold marble (Gm), or marble (M).  The following genotypes will produce the black blushing phenotype:

D/D – S/S
D/g – S/S
D/Gm – S/S
D/M – S/S

 Another common name for this phenotype is “black velvet” because the coloration is a smooth, velvety black.  This fish is characterized by lack of any lace pattern in the fins or tail.  The underlying stripes that can be seen with a bright light in D/D and D/g will not be present in D/D–S/S and D/g–S/S.

 Subtle differences can be seen between each of these genotypes.  The double dark black blushing will be darker black than the hybrid black blushing angelfish.  When the hybrid black blushing has either a gold marble or marble allele paired with the dark allele, the underlying darker marbled markings will still be visible under a bright light.

 As a fry and young juvenile, the angelfish will have a light gray coloration, and the blushing in the gill area will be distinctly visible as a purplish circular area.  As the angelfish matures, the black pigment continues to develop until the angelfish is a deep black color, including pigmentation of the gill plates.  The blushing is no longer visible in the adult.  The absence of lace pattern in the tail and fins, however, can be used to identify the black blushing adult.    

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