Dwarf Chain Loach
Ambastaia sidthimunki
The Dwarf Chain Loach (Ambastaia sidthimunki) is a peaceful fish that's a good step up once you have a little experience. Give it a tank of at least 80 litres (21 US gallons), water held at 68-81°F, and a pH of 6.5-7.5. 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
Southeast Asia
- East & Southeast Asia
Regional colours match the stocking calculator's origin map.
Dwarf Chain Loach Tank Setup
Give them at least 80 litres (21 US gallons) and a tight-fitting lid, since many loaches are escape artists. Keep the water at 68-81°F with a pH around 6.5-7.5; 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 Dwarf Chain 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.
Dwarf Chain Loach Tank Mates
Highly active loach; keep in groups of 6+. Demands well-oxygenated water. IUCN Endangered; buy captive-bred. The Dwarf Chain Loach is peaceful, which is the first thing to weigh up when you choose tank mates. 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 Dwarf Chain 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.
Dwarf Chain Loach - frequently asked questions
What size tank do Dwarf Chain Loaches need?
Dwarf Chain Loaches need a tank of at least 80 litres (21 US gallons). A bigger tank is always easier to keep stable, and gives them more room to settle in and behave naturally.
How many Dwarf Chain Loaches should I keep together?
Keep a group of at least 6. Dwarf Chain Loaches are a shoaling species and become stressed, lose their colour, or hide when kept singly or in pairs.
What water parameters do Dwarf Chain Loaches need?
Keep them at 68-81°F with a pH of 6.5-7.5, 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 Dwarf Chain Loaches eat?
Dwarf Chain 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 Dwarf Chain Loaches good for beginners?
Dwarf Chain 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 Dwarf Chain Loaches
- Buying fewer than 6 - Dwarf Chain Loachs need a proper school to feel secure; isolated individuals hide, fail to colour up, or become stressed.
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 Dwarf Chain 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
- Betta (Male)Predator - Betta (Male) will eat or injure smaller tank mates
