Black Skirt Tetra

Gymnocorymbus ternetzi

Minimum Tank Size

20 gal

Temperature

70–80°F

PH

6.0–7.5

Adult Size

2–2.5 in

Temperament 

Active schooling; can fin-nip

Care Difficulty

Beginner

Diet & Feeding

Feed a varied, species-appropriate diet built around a quality prepared staple, with frozen/live or plant foods as appropriate. Avoid overfeeding.

Care Instructions

Maintain stable 70–80°F water, appropriate water chemistry, regular partial water changes, and enough space for an adult Black Skirt Tetra.

Flow & Filtration

Use mature biological filtration, good oxygenation, and flow appropriate to the species. Maintain consistently low ammonia and nitrite.

Planted Tank Suitability

Suitable when plants and layout match the species; protect plants from digging or grazing where necessary.

Tank Mate Compatibility

Good Tank Mates
  • Corydoras
  • Danios
  • Similar Robust Tetras

Use Caution 
  • Angelfish
  • Gourami

Avoid
  • Betta
  • Long-finned Guppies

Compatibility Notes

Keep a larger school to reduce fin-nipping; avoid slow long-finned fish.

Breeding Notes

Breeding requirements vary; use a dedicated setup when attempting to raise eggs or fry.