Head-and-taillight Tetra
Characidae sp.
Head-and-taillight Tetra (Characidae sp.) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 17.2 US gal min; aim for 75–82°F and pH 5.5–7.5. The Head-and-taillight Tetra is ideal for aquarists seeking an engaging, peaceful species that thrives in groups.

Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Mostly South America
- South America
Regional colours match the stocking calculator’s origin map.
Head-and-taillight Tetra Tank Setup
Create a mid-tank swimming zone with ample swimming space complemented by strategically placed plants and decorations to encourage natural behaviors. A substrate that mimics their natural habitat, along with subdued lighting, can enhance comfort and reduce stress, while ensuring water flow is gentle to cater to their needs.
What Do Head-and-taillight Tetras Eat?
Being omnivorous, they enjoy a varied diet of micro foods, but feeding should be moderate to prevent competition and ensure all individuals can access their share. Fast feeders or large pellets may lead to uneven feeding and stress; instead, opt for small, floating flakes or granules that allow all fish to participate equally.
Head-and-taillight Tetra Tank Mates
These tetras pair well with other similarly-sized, peaceful species, such as other tetras or small rasboras, minimizing aggression risks. Avoid larger or more aggressive species that could intimidate or outcompete them. Intraspecies aggression is rare, but providing sufficient space and cover can help maintain harmony within the group.
Are Head-and-taillight Tetras Good for Beginners?
In App-aquatic we file this under easy care. That still means a cycled tank, realistic stocking, and parameters that do not swing every weekend. A common error is keeping them in small groups or solitary, which can lead to stress and health decline. neglecting to provide cover can result in increased anxiety and reduced displays of natural behavior, as they may feel exposed and vulnerable without hiding spots.
Building a community? Run the full list through the stocking calculator before you add anything else.
Log tests and reminders in App-aquatic—free, same data you see here.




