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Weather loach

Freshwater Intermediate Peaceful

Weather loach grows to about 20 cm and needs a tank of at least 44 UK gal. Here's how to keep it healthy and what it lives well with.

Quick facts

Water type
Freshwater
Group
Cold-water
Difficulty
Intermediate
Temperament
Peaceful
Swims
Bottom
Adult size
20 cm
Minimum tank
44 UK gal
Min swim length
120 cm
Group size
3+ together

Water parameters

Temperature
10–24 °C
pH
6.5–8
Hardness
5–19 dGH

Tank & care

Weather loach is a shoaling species — keep a group of at least 3 so they feel secure and show natural behaviour. Kept alone or in twos they tend to turn shy, stressed or nippy.

Give it at least 120 cm of swimming length and hold the water around 10–24 °C. Match any new species to these ranges before adding them.

Plan a tank with this fish

Use the stocking calculator to see how many Weather loach your tank can hold and whether your planned tankmates are compatible — it's anchored to your net water volume and footprint.

Open the stocking calculator Calculate tank volume

Figures are conservative hobby-consensus estimates for planning. Individual fish vary — always research a species and watch how yours behave.

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