Black Widow Tetra 3cm (Group of 10)

The Black Widow Tetra (Gymnocorymbus ternetzi), also known as the Black Skirt Tetra, is a classic and hardy schooling fish from the Paraguay and Guaporé River basins in South America. Displaying a silvery body that deepens to jet black toward the tail, with distinctive vertical black stripes and flowing, skirt-like anal fins, it is one of the most recognisable tetras in the hobby and an excellent choice for community aquariums.

Care Guide

• Tank Size: Minimum 60L; best kept in schools of 6 or more
• Water Parameters: pH 6.0–8.0 | Temp 20–26°C | Adaptable to a wide range of water conditions; one of the hardiest tetra species
• Diet: Omnivorous — quality flake and micro pellet foods; supplement with frozen or live daphnia and brine shrimp
• Temperament: Generally peaceful; can be mildly nippy with long-finned tank mates — best kept in groups to distribute attention
• Tank Setup: Planted aquarium with open swimming space; darker substrate enhances their striking black colouration
• Skill Level: Beginner
• Max Size: 6cm