All species
Amano shrimp (Caridina multidentata)
Photo: Stefanie Leuker · CC0 via Wikimedia Commons

Amano shrimp

Caridina multidentata · Atyidae

Also known as Yamato shrimp, Algae shrimp

Beginner

A strong algae eater; larger and hardier than cherry shrimp, but it won't breed in fresh water.

In short: An Amano shrimp needs at least 40 L (11 US gal), water at 18–28 °C (64–82 °F) and pH 6.5–7.8. It is peaceful, best kept in groups of 5 or more, and rated beginner to keep.

Updated

Minimum tank
40 L (11 US gal)
Temperature
18–28 °C (64–82 °F)
pH
6.5–7.8
Adult size
5 cm (2 in)
Group size
5+

Care requirements

Minimum tank volume
40 L (11 US gal)
Temperature
18–28 °C (64–82 °F)
pH
6.5–7.8
Hardness
4–18 dGH
Lifespan
2–5 years
Diet
Omnivore — algae, biofilm, wafers, blanched veg.
Care level
Beginner

Origin & habitat

Native region
Japan and Taiwan
Water type
Freshwater
Biotope
Fast, cool, rocky streams
Natural conditions
Clean cool water, no copper, plenty of surfaces to graze.

Behaviour & stocking

Temperament
Peaceful
Minimum group
5 fish
Swims
Bottom
Good tank mates
Tetras
Rasboras
Corydoras
Avoid
Large cichlids
Copper medication
Puffers

Breeding & difficulty

Breeding difficulty
Advanced
Sexing
Females are larger with dashes rather than dots on the flanks.
Notes
Larvae need brackish water — no accidental population boom.
Common ailments
Failed moults
Copper poisoning
Jumping out of open tanks
Will it fit your tank?

Sign in and AquaLog compares Amano shrimp against every tank you track — volume, water type, temperature and pH — then adds it to your livestock in one tap.

Sign in to check my tanks

Guides and lists that mention the Amano shrimp

Similar species