rm
Passport
- Family
- Loaches and Botia
- Grows to
- 6 cm (2.4")
- Lives
- 8–12 years
- Temperament
- Semi aggressive
- Care
- Intermediate
- Swims
- On the bottom
- Keep
- In a group of 5 or more
- Water
- 20–30 °C (68–86 °F)
ThailandLaos
Care requirements
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On record for Dwarf Chain Loach: adult size, lifespan, minimum tank, temperature, ph, hardness, minimum group, diet, care level, swim level, tank length.
A figure that is not on record is left out rather than guessed. One marked Suggested comes from keeping knowledge rather than a page.
- Minimum tank 76 L / 20.0 US gal
- pH 5.5–7.5
- Hardness 1–12 dGH
- Diet carnivore
- Tank length 80 cm minimum
Care notes written from general aquarium knowledge, not from the cited sources.
About
Dwarf chain loaches give you everything a botia does at a fraction of the size. They carry the same restless curiosity, the same social hierarchy and the same snail-hunting habit as a clown loach, in a fish small enough for an ordinary community tank.
The pattern is a chain of dark blotches linked along the flank, and it's at its sharpest on a settled adult. They're quick, constantly busy and almost never still.
They come from Thailand and are now scarce in the wild, with most trade stock commercially bred. That's a good thing — wild collection had a real impact on the species.
Tank setup
Keep your chain loaches in a proper group and give them ground to cover. They're a social fish with a working pecking order, and a lone one or a pair behaves badly: skittish, hidden, and inclined to pester tank mates.
Structure the tank densely. Rocks, wood, caves and gaps to squeeze into let them explore, and a group with plenty of cover is out in the open far more than a group without it.
Use sand or smooth fine gravel. They sift and probe with their barbels and coarse gravel wears them down.
Check ornaments for one-way holes. Like all botias they wedge themselves into small spaces and can get trapped.
Moderate flow and well-oxygenated water suits them; they come from flowing streams rather than still pools.
Feeding
Chain loaches eat readily and will take sinking pellets, wafers, frozen and live food without hesitation.
Feed them protein regularly. Bloodworm, brine shrimp and daphnia keep the colour and the condition up, and a well-fed group is much less inclined to bother anyone.
They hunt snails, and they're good at it. A group will clear a pest snail outbreak inside a few weeks, and will treat an ornamental snail exactly the same way.
Avoid: relying on leftovers from the fish above them. They're active enough to need their own food going in.
Filtration and flow
Give them decent flow and good oxygenation. They're stream fish and they use a current rather than avoiding it.
Filter well and keep nitrate low. Loaches generally show poor water quality in their barbels first — eroded or shortened barbels mean the substrate or the water needs attention.
Guard against gaps. They investigate filter intakes and pipework thoroughly.
With plants
Dwarf chain loaches don't eat plants but they will disturb them while rooting around.
Attach plants to hardscape where you can. Java fern, anubias and moss on wood are safe and add the cover the fish want.
Rooted plants in sand generally survive them, unlike with the larger botias, simply because these fish are small enough not to excavate much.
Health
Ich finds them readily. Which product to reach for, and how much of it, are both questions for its own instructions: some name loaches and some warn against them, and a self-invented smaller dose risks leaving the parasite alive.
Their scales are fine and their skin is delicate. Move them in a container rather than a net, because the spine beneath each eye catches in mesh.
Watch the group dynamic. Constant chasing that never settles means the group is too small, and a fish that has stopped joining the others is usually the first sign of illness.
Breeding
They're rarely bred deliberately in home tanks, and most commercial stock is produced with hormone induction.
Reports of accidental spawnings point to the same triggers as their wild breeding: cooler, softer water and increased flow, mimicking the onset of the rainy season.
Nothing about it is reliable enough to plan for. If a spawning does happen the adults will eat the eggs, so a separate tank would be the only way to raise any.
Tank mates
Avoid16
- Convict Cichlid Convict Cichlid grows to 15 cm against Dwarf Chain Loach at 6 cm, big enough to eat it.
- Jewel Cichlid Jewel Cichlid grows to 15 cm against Dwarf Chain Loach at 6 cm, big enough to eat it.
- Least Killifish Dwarf Chain Loach grows to 6 cm against Least Killifish at 2 cm, big enough to eat it.
- Scarlet Badis Dwarf Chain Loach grows to 6 cm against Scarlet Badis at 2 cm, big enough to eat it.
- Assassin Snail Dwarf Chain Loach is not safe with Assassin Snail: loaches and botia and snails are a bad pairing.
Only with care31
- Kribensis Dwarf Chain Loach is semi-aggressive and Kribensis is peaceful.
- Panda Garra Dwarf Chain Loach is semi-aggressive and Panda Garra is peaceful.
- Amano Shrimp Dwarf Chain Loach is a risk to Amano Shrimp: loaches and botia and shrimp and yabbies are a pairing to watch.
- Bamboo Shrimp Dwarf Chain Loach is a risk to Bamboo Shrimp: loaches and botia and shrimp and yabbies are a pairing to watch.
- Blue Bolt Shrimp Dwarf Chain Loach is a risk to Blue Bolt Shrimp: loaches and botia and shrimp and yabbies are a pairing to watch.
No conflict is recorded with the other 60 species in the database, so nothing to flag. 1 species is not covered at all, so they could not be judged either way.