Stone Loach
Barbatula barbatula
The Stone Loach (Barbatula barbatula) is a peaceful fish that's a good step up once you have a little experience. Give it a tank of at least 150 litres (40 US gallons), water held at 59-72°F, and a pH of 7-8.
Captive lifespan reflects typical experience in a home aquarium, not maximum recorded age; genetics, sourcing, and care vary.
Natural distribution
Europe / Asia
- East & Southeast Asia
Regional colours match the stocking calculator's origin map.
Stone Loach Tank Setup
Give them at least 150 litres (40 US gallons) and a tight-fitting lid, since many loaches are escape artists. Keep the water at 59-72°F with a pH around 7-8; soft sand suits the ones that like to burrow. They reach about 15 cm as adults, so don't be misled by the small juveniles sold in stores.
What Do Stone Loaches Eat?
They're bottom feeders, so give them sinking wafers, tablets, or frozen treats like bloodworm once the lights go down. Flakes that never reach the bottom leave them hungry even when the tank looks well-fed.
Stone Loach Tank Mates
Native European loach; requires cool, well-oxygenated water. Not suitable for tropical tanks. The Stone Loach is peaceful, which is the first thing to weigh up when you choose tank mates. Good matches come down to the whole stocking list working together - temperature, tank size, and temperament - not any single label. 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 Stone Loaches 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.
Stone Loach - frequently asked questions
What size tank do Stone Loaches need?
Stone Loaches need a tank of at least 150 litres (40 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
What water parameters do Stone Loaches need?
Keep them at 59-72°F with a pH of 7-8, 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 Stone Loaches eat?
Stone Loaches are bottom feeders. Give them sinking wafers, tablets, and frozen foods that settle on the substrate, ideally after the lights go off. Feed small amounts once or twice a day, and remove anything they don't eat.
Are Stone Loaches good for beginners?
Stone Loaches are best for keepers with a little experience. They are manageable once you test water regularly and catch problems early; a complete beginner may prefer something more forgiving first.
Common mistakes with Stone Loaches
- Underestimating tank size - the minimum footprint is 150 litres (40 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 Stone Loaches
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
- AxolotlPredator - Axolotl will eat or injure smaller tank mates
- Crescent BettaPredator - Crescent Betta will eat or injure smaller tank mates
