Black Widow Tetra

Black Widow Tetra (Gymnocorymbus ternetzi)

Also known as the Black Skirt Tetra, the Black Widow features a deep, laterally compressed silver body with bold black vertical stripes and dark fins. Hardy, active, and easy to keep, it's a popular and characterful schooling fish for community tanks.

Care at a Glance:

• Minimum Tank Size: 75L with plants and open swimming space
• Temperature: 22–28°C
• pH Range: 6.0–7.5
• Water Hardness: Soft to moderate
• Temperament: Peaceful but active; can be nippy with slow-moving fish
• Diet: Flakes, micro-pellets, frozen bloodworms and brine shrimp
• Max Size: 5–6cm
• Lifespan: 3–5 years
• Care Level: Easy

Tank Mates: Active community fish such as other tetras, rainbowfish, and barbs; avoid slow-moving or long-finned species.

Origin: South America — rivers and streams (Brazil, Paraguay, Argentina)