A large, highly active, and deeply social cold-water loach. Famous for their erratic swimming patterns in response to barometric pressure changes (hence 'Weather Loach'). They are entirely unsuited for tropical temperatures and require fine sand to fulfill their natural burrowing behaviors.
At a Glance
Tank Requirements
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Water Parameters
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Temperament & Compatibility
Available Varieties
Each variety inherits the species defaults above. Only differences are highlighted.
Standard Adult
The fully grown Dojo Loach. Due to their thick, heavy bodies and extreme activity levels, they require a 4-foot (120cm) tank minimum with tight-fitting lids to prevent jumping.
Differs in 1 trait from base species
Also known as: Wild Type, Golden Morph, Adult Weather Loach
Juvenile (Grow-out)
Young Dojo Loaches typically sold in stores around 3-4 inches. They grow rapidly and will quickly outgrow smaller aquariums. Must be kept in groups and on sand.
Differs in 4 traits from base species
Also known as: Baby Dojo, Small Weather Loach
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🟢Ideal Tank MatesDojo Loach (Weather Loach) Care Guide Summary
The Dojo Loach (Weather Loach), scientifically known as Misgurnus anguillicaudatus, belongs to the Loaches family group. Adults reach a maximum size of approximately 25 cm and have a eel body shape with a fast growth rate. Classified as peaceful, this species primarily occupies the bottom zone of the aquarium and produces a high level of biological waste.
To thrive, the Dojo Loach (Weather Loach) requires a freshwater only aquarium with a minimum volume of 200 litres and a tank length of at least 120 cm. Water temperature should be maintained between 10°C and 24°C, with a pH range of 6.5–8 and a general hardness of 5–15 dGH. A moderate water flow is preferred. An aquarium test kit can help you monitor these values.
The Dojo Loach (Weather Loach) is a rewarding species to keep, provided its core environmental needs are met. This species is available in 2 varieties: Standard Adult and Juvenile (Grow-out). Each may differ slightly in size, temperament, or care needs, so it is worth checking the specific requirements of the variety you plan to keep.
Dojo Loach (Weather Loach) Habitat Setup
When setting up an aquarium for the Dojo Loach (Weather Loach), a moderate water flow best suits their natural preferences. Because this species occupies the bottom zone, the aquarium layout should prioritise sufficient floor space with hiding spots among rocks, wood, or dense planting. Useful additions include a sand substrate to accommodate their sifting behaviour. Keepers should note that a tight-fitting lid is essential, as this species is a known jumper, expect substrate disturbance, so lightweight décor should be secured, and live planted layouts may be difficult to maintain, as this species tends to uproot or consume vegetation. Browse aquarium sand substrate options to find the best fit.
Dojo Loach (Weather Loach) Compatibility Notes
Classified as peaceful, the Dojo Loach (Weather Loach) is a social species that requires the company of its own kind to thrive. When choosing tankmates, snails will be treated as food rather than tankmates and their energetic swimming style may stress more sedentary or timid species. Selecting tankmates that favour different water layers from the bottom zone can help reduce competition and territorial overlap.
Recommended Tank Sizes
Standard aquarium sizes that meet the minimum volume and length requirements for Dojo Loach (Weather Loach).
55 Gallon Standard
60 Gallon Breeder
75 Gallon Standard
90 Gallon Standard
125 Gallon Standard
150 Gallon High
Frequently Asked Questions About Dojo Loach (Weather Loach)
How big does Dojo Loach (Weather Loach) get?
Dojo Loach (Weather Loach) (Misgurnus anguillicaudatus) typically reaches a maximum adult size of approximately 25 cm. They have a eel body shape and a fast growth rate.
What tank size does Dojo Loach (Weather Loach) need?
A minimum aquarium volume of 200 litres and a tank length of at least 120 cm are recommended for Dojo Loach (Weather Loach). This ensures enough swimming space and helps maintain stable water conditions.
What water parameters does Dojo Loach (Weather Loach) need?
Dojo Loach (Weather Loach) thrives in freshwater only conditions with a temperature range of 10–24°C, a pH between 6.5 and 8, and a general hardness of 5–15 dGH. A moderate water flow is preferred.
Is Dojo Loach (Weather Loach) peaceful or aggressive?
Dojo Loach (Weather Loach) is classified as peaceful with an aggression score of 2 out of 10. They are generally well-suited to peaceful community tanks.
Can Dojo Loach (Weather Loach) live alone?
No, Dojo Loach (Weather Loach) should be kept in groups of at least 3 to reduce stress and encourage natural behaviour.
Will Dojo Loach (Weather Loach) eat snails?
Yes. Dojo Loach (Weather Loach) actively feeds on snails. While this can be useful for controlling pest snail populations, it means decorative snails should not be housed with this species.
Does Dojo Loach (Weather Loach) have any special tank requirements?
Yes. Dojo Loach (Weather Loach) benefits from sand (sifters) in the aquarium. These features help replicate their natural habitat and promote overall health and well-being.
Does Dojo Loach (Weather Loach) need a lid on the tank?
Yes. Dojo Loach (Weather Loach) is a known jumper, and a tight-fitting lid or cover is essential to prevent escape. Even a small gap can be enough for a determined fish to leap out.
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