Amano Shrimp: Tank Size, Tank Mates and How Many to Keep

Amano shrimp are the hardest-working algae eaters you can buy. They are bigger and bolder than cherry shrimp.

Adult size
2 in5 cm
Smallest tank
10 gallons38 liters
How many
3 or more
Temperature
68–81 °F20–27 °C
pH
6.5–7.8
Temperament
Peaceful
Swims
On the bottom
Heater needed
In a cool room

What size tank do amano shrimp need?

At least 10 gallons (38 liters) for a group of 3. The smallest standard tank that works is the 10 gallon. A bigger tank is always easier to keep stable. Scientific name: Caridina multidentata.

How many amano shrimp in each tank size?

This is how many each standard tank carries comfortably if amano shrimp are the only animals in it. Share the tank with other species and the number goes down.

TankHow many amano shrimp
5 gallonToo small
10 gallonup to 30
20 gallon long60 or more
29 gallon60 or more
40 gallon breeder60 or more
55 gallon60 or more
75 gallon60 or more
125 gallon60 or more

Check amano shrimp against your own tank and other fish

Good to know

  • Keep at least 3. Amano shrimp feel safe in numbers and come out into the open more.

Tank mates for amano shrimp

These animals like the same water, are a safe size, and have a temper that fits. It is a match on paper: always watch new tankmates for the first week.

Poor matches

  • Fancy goldfish: Goldfish do best with other fancy goldfish.
  • Oscar: Oscar is aggressive and will bully or kill peaceful fish such as amano shrimp.
  • Molly: They need different water: Amano shrimp likes a pH of 6.5–7.8, molly likes 7.5–8.5.

Questions and answers

What size tank do amano shrimp need?

At least 10 gallons (38 liters) for a group of 3. The smallest standard tank that works is the 10 gallon. A bigger tank is always easier to keep stable.

How many amano shrimp should be kept together?

At least 3. Amano shrimp are social animals and only behave naturally in a group. More is better if the tank has room.

Can amano shrimp live in a 10 gallon tank?

Yes. A 10 gallon tank carries up to about 30 as the only animals in the tank.

What temperature do amano shrimp need?

68–81 °F (20–27 °C), with a pH of 6.5–7.8. A heater is only needed if your room gets cold.

Can amano shrimp live with a betta?

Usually, yes, in a tank of 10 gallons (38 liters) or more. They like the same water: 75–81 °F (24–27 °C). Every betta has its own temper, so watch closely for the first week and have a spare tank ready.

More fish

Adult size, tank size and water ranges follow the mainstream care consensus (Seriously Fish species profiles and FishBase maximum lengths). Where sources differ we use the more cautious figure. Stocking numbers come from our stocking calculator.