Zebra Loach (Cobitoidea sp.) in a freshwater aquarium
Intermediate carePeacefulSchool of 6+Asia

Zebra Loach

Cobitoidea sp.

The Zebra Loach (Cobitoidea sp.) is a peaceful fish that's a good step up once you have a little experience. Give it a tank of at least 140 litres (37 US gallons), water held at 70-79°F, and a pH of 6-7.8. Always keep a group of at least 6 - they feel safest in numbers.

Care levelIntermediate
TemperamentPeaceful
Min tank size37 US gal
pH range6-7.8
Temperature70-79°F
Max size3.5 in (9.0 cm)
Captive lifespan5-12 years
SchoolingYes · 6+ recommended
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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.

Zebra Loach Tank Setup

Give them at least 140 litres (37 US gallons) and a tight-fitting lid, since many loaches are escape artists. Keep the water at 70-79°F with a pH around 6-7.8; soft sand suits the ones that like to burrow. 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.

What Do Zebra Loaches 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.

Zebra Loach Tank Mates

The Zebra Loach is peaceful, which is the first thing to weigh up when you choose tank mates. It's a known fin-nipper, so avoid bettas, guppies, and other slow, long-finned fish. 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 Zebra Loaches Good for Beginners?

Doable once you test water regularly and catch problems before fish look sick. If this is your first tank, pick something more forgiving and come back later.

Zebra Loach - frequently asked questions

What size tank do Zebra Loaches need?

Zebra Loaches need a tank of at least 140 litres (37 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.

How many Zebra Loaches should I keep together?

Keep a group of at least 6. Zebra Loaches are a shoaling species and become stressed, lose their colour, or hide when kept singly or in pairs.

What water parameters do Zebra Loaches need?

Keep them at 70-79°F with a pH of 6-7.8, 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 Zebra Loaches eat?

Zebra Loaches 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 Zebra Loaches good for beginners?

Zebra 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 Zebra Loaches

  • Buying fewer than 6 - Zebra Loachs need a proper school to feel secure; isolated individuals hide, fail to colour up, or become stressed.
  • Underestimating tank size - the minimum footprint is 140 litres (37 US gallons); impulse buying into a smaller tank leads to stress and shortened lifespan.
  • Mixing with long-finned fish - Zebra Loachs will nip at bettas, angelfish, and other fish with flowing fins, causing stress and infection risk.

Building a community? Run the full list through the stocking calculator before you add anything else.

Fish to avoid mixing with Zebra 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
  • Pea PufferPredator - Pea Puffer will eat or injure smaller tank mates
  • Common GoldfishGoldfish - prefer cooler, harder water that tropical fish cannot tolerate