Black Widow Tetra

The Black Widow Tetra is a striking and elegant schooling fish known for its flowing fins and deep charcoal colouring. Its distinctive black “skirt” appearance and peaceful temperament make it a popular choice for community aquariums.

Black Widows are active swimmers that thrive in groups of six or more and show their best behaviour and colouration when kept in well-planted tanks with open swimming space.

Easy to care for and highly adaptable, they’re ideal for both beginner and experienced aquarists looking to add contrast and movement to their setup.

Key Features:

• Scientific Name: Gymnocorymbus ternetzi

• Size: 4–6 cm

• Temperature: 22–28°C

• pH: 6.0–7.5

• Temperament: Peaceful (may nip fins if kept in too small a group)

• Diet: Omnivore – flake, pellet, frozen/live foods

• Compatibility: Great for community tanks

• Tank Level: Mid

Care Tip: Keep in groups of at least 6 to reduce fin-nipping and encourage natural schooling behaviour.

Add a touch of contrast and elegance to your aquarium with this hardy and graceful species.