
Source: Wikimedia Commons
Ambastaia sidthimunki
A small loach of about 6cm whose dark dorsal stripe and reticulated flanks read as a chain. Diurnal and shoaling a little above the substrate, it is one of the few loaches that suits a planted tank.
Ambastaia sidthimunki is a small loach of the Chao Phraya and Mekong basins in Thailand and Myanmar. FishBase gives a standard length of 5.5cm and Seriously Fish 60mm. It lives in medium to large rivers, flooded fields and small turbid lakes, and is active by day, shoaling a little above the bottom. That habit and its small size make it one of the few loaches suited to a planted tank. Seriously Fish gives 20-30C, pH 5.5-7.5, 1-12dGH and an 80 x 30cm tank of about 72 litres. Opinions on its temperament are divided: some keepers find it peaceful over the long term, while others report damaged eyes and fins in sedentary or long-finned tankmates. Seriously Fish cannot explain the difference but advises against small aquaria and recommends as large a group as possible. In the wild it appears to be a seasonal, migratory spawner, and success in private aquaria is very rare. Trade stock is mostly hormone-induced. IUCN status is Endangered.
Source: Wikipedia (CC BY-SA 4.0)
The Dwarf Chain Loach lives 8-12 years.
The Dwarf Chain Loach grows to 5.5-6cm.
The ideal temperature for the Dwarf Chain Loach is 20〜30℃.
Origin
Southeast Asia (Thailand and Myanmar, Chao Phraya and Mekong basins)
Lifespan
Sources: FishBase / Seriously Fish
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Ambastaia sidthimunki (Klausewitz, 1959)
Synonyms: Botia sidthimunki, Yasuhikotakia sidthimunki
Authority databases: FishBase
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
Find listings for this species
8-12 years
Size
5.5-6cm
Temperature
20〜30℃
Sinking dried foods, frozen bloodworm, Daphnia, Artemia
Seriously Fish suggests an 80 x 30cm base of about 72 litres. Provide cover with stones and driftwood over sand or fine gravel. Its small size and habit of swimming above the substrate suit a planted tank.
Seriously Fish gives 20-30C, pH 5.5-7.5 and 1-12dGH. FishBase records 26-28C in the wild. It needs a mature tank with stable water.
Reports conflict. Some keepers find it peaceful, while others record damage to the eyes and fins of sedentary or long-finned fish. Avoid small tanks and keep it in as large a group as possible.
Chiefly carnivorous but it also eats plant matter. Combine sinking dried foods with frozen bloodworm, Daphnia and Artemia. Soft-leaved plants may be nibbled.
In the wild it appears to be a seasonal, migratory spawner, and successful breeding in private aquaria is very rare. Trade stock is mostly hormone-induced.
It does not settle in a small group, and it is unsuited to a newly set-up tank. IUCN status is Endangered, so choose captive-produced fish. The trade name clown botia does not mean the clown loach (Chromobotia macracanthus); this is a different fish that stops at 5.5-6cm. It is also labelled under its former genera Botia and Yasuhikotakia.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Dwarf Chain Loach is 20〜30℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Dwarf Chain Loach is 8-12 years. With proper care and nutrition, they can live a long and healthy life.
Dwarf Chain Loach typically reaches 5.5-6cm as an adult. Size may vary depending on care conditions and individual genetics.
Dwarf Chain Loach feeds on: Sinking dried foods, frozen bloodworm, Daphnia, Artemia. Aim for a balanced diet with appropriate feeding frequency.
The price of Dwarf Chain Loach varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026