Widow tetras (also known as black widow tetras or Gymnocorymbus ternetzi) naturally come in the following color variations:
1. Natural (Black Widow Tetra)
• Body: Silver-grey with two vertical black stripes behind the gills.
• Fins: Semi-transparent or dark.
2. Colored Varieties (Dye-injected or Selectively Bred)
These are often referred to as “GloFish” tetras or colored widow tetras, and may include:
• Blue
• Pink (magenta)
• Green
• Orange
• Purple
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