Tinfoil Barb
Barbonymus schwanenfeldii
The Tinfoil Barb (Barbonymus schwanenfeldii) is a peaceful fish that's easy to keep. Give it a tank of at least 450 litres (119 US gallons), water held at 72-82°F, and a pH of 6-7.5. Always keep a group of at least 6 - they feel safest in numbers.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Asia
- East & Southeast Asia
Regional colours match the stocking calculator's origin map.
Tinfoil Barb Tank Setup
Give them a tank of at least 450 litres (119 US gallons). As open-water swimmers they care more about swimming length than height, so a longer tank is ideal. Keep the water at 72-82°F with a pH around 6-7.5, and avoid sudden swings. Always keep a group of at least 6 of their own kind - kept alone or in pairs they tend to turn shy, nippy, or wash out in colour. They grow to around 35 cm, so plan the tank size and filtration for a full-grown adult rather than the small juvenile you see in the shop.
What Do Tinfoil Barbs Eat?
They're not fussy eaters - feed a varied diet, rotating good-quality dry, frozen, and gel foods rather than the same thing every day, and match the food size to their mouths.
Tinfoil Barb Tank Mates
Often sold as small juveniles but grows very large. Requires very large tank. Will eat plants and small fish. The Tinfoil Barb is peaceful, which is the first thing to weigh up when you choose tank mates. At around 35 cm fully grown, it needs tank mates that can hold their own against its size and appetite. It's a shoaling fish, so settle a group of 6 or more of its own kind before adding anything else - a stressed, lonely fish is far more likely to nip or hide. Before you buy, run your full stocking list through our stocking calculator. It weighs temperament, adult size, and water needs together, which a single species page can't do on its own.
Are Tinfoil Barbs Good for Beginners?
Not a sensible first purchase. Get the tank cycled, keep easier fish stable for a year, then revisit if you still want the extra work this species demands.
Tinfoil Barb - frequently asked questions
What size tank do Tinfoil Barbs need?
Tinfoil Barbs need a tank of at least 450 litres (119 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
How many Tinfoil Barbs should I keep together?
Keep a group of at least 6. Tinfoil Barbs are a shoaling species and become stressed, lose their colour, or hide when kept singly or in pairs.
What water parameters do Tinfoil Barbs need?
Keep them at 72-82°F with a pH of 6-7.5, steady rather than chased to an exact figure. In a cycled tank, ammonia and nitrite should both read 0 ppm, with nitrate kept low through regular water changes.
What do Tinfoil Barbs eat?
Tinfoil Barbs are omnivores and aren't fussy eaters. Feed a varied mix of good-quality dry, frozen, and gel foods, and match the food size to their mouths. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Tinfoil Barbs good for beginners?
Yes - Tinfoil Barbs are a good beginner choice once the tank is fully cycled and you can keep a proper group. They are hardy but still need stable water and a school to feel secure.
Common mistakes with Tinfoil Barbs
- Buying fewer than 6 - Tinfoil Barbs need a proper school to feel secure; isolated individuals hide, fail to colour up, or become stressed.
- Underestimating tank size - the minimum footprint is 450 litres (119 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
Building a community? Run the full list through the stocking calculator before you add anything else.
Great tank mates
Chosen from temperament, overlapping temperature/pH bands, plausible minimum tank footprints, and size versus yours in App-aquatic data. Hobby nuance always wins - verify stocking and temperament before purchasing.
Fish to avoid mixing with Tinfoil Barbs
These well-known species are commonly sold alongside this fish but are not recommended tank mates - verify before purchasing.
- OscarPredator - Oscar will eat or injure smaller tank mates
- Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
- Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates
