Wagtail / Tuxedo Swordtail
A variant of Swordtail (Xiphophorus hellerii)
Representative Swordtailphoto — a dedicated image of this exact morph isn't available yet.
Wagtail adds solid black fins and lips to a colored (usually red) body; tuxedo adds a black flank blotch — both fixed pigment patterns from selective breeding.
Keeper tips for this variant
The melanin-heavy tuxedo lines are slightly prone to melanoma when over-bred for black, so source from reputable lines and don't intensify black beyond the standard pattern.