Long-fin Tetra
Characidae sp.
Long-fin Tetra (Characidae sp.) — Easy care, Peaceful, under Tetra & Characin. Minimum tank in the app: 50 US gal min; aim for 72–79°F and pH 5.5–7.5. The Long-fin Tetra is a captivating choice for aquarists who appreciate dynamic schooling fish.
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.
Long-fin Tetra Tank Setup
Create a mid-level swimming area with ample open space complemented by plants and driftwood for cover. A gentle water flow and subdued lighting will mimic their natural habitat, fostering comfort and activity.
What Do Long-fin Tetras Eat?
They are omnivorous and prefer small-sized foods that mimic their natural diet. Quick feeders, they may outcompete slower tank mates, so consider the feeding strategy to ensure all fish receive adequate nutrition.
Long-fin Tetra Tank Mates
Long-fin Tetras pair well with similarly sized, non-aggressive species, making them ideal for community tanks. Be cautious with larger or more aggressive fish that may intimidate them. Within their groups, maintain a minimum of six to ensure social harmony and reduce stress.
Are Long-fin 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. Aquarists often underestimate their social needs or provide inadequate tank size, leading to stress and aggression. Overcrowding or poor water quality can also compromise their health and wellbeing.
Building a community? Run the full list through the stocking calculator before you add anything else.
Similar fish to consider
Log tests and reminders in App-aquatic—free, same data you see here.