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Number of Amano Shrimp vs Tank Gallon Size [Complete GUIDE]

The freshwater Amano Shrimp is a famous aquarium creature because of its beauty and rarity. Their transparent colour and refined appearance make them a welcome addition to any fish tank.

Remember that Amano Shrimp have particular needs regarding tank size and water quality.

In this article, we will provide a detailed tutorial on determining which dimension tank is best for your Amano Shrimp and how to set up their habitat correctly.

Amano Shrimp Tank Size Guide: How Many Amano Shrimp Can You Keep in an Aquarium?

The maximum size of Amano Shrimp is 2” in length. They cannot grow substantially even if they are fully healthy or at full younger age.

As a general rule of thumb, 4 Amano shrimps can easily be accommodated in a ten-gallon tank.

In overcrowded tanks, adding 20% fewer Amano shrimps is recommended.

On average, they have a 2-5 year of life span.

The well-being of these stunning Shrimps depends on careful filtration and constant attention to water quality. You can make your Amano Shrimp feel comfortable and thrive with the right room and care.

The following tables show different-sized tank vs No of Amano Shrimps

Size of Tank (Gallons)Number of Amano Shrimp

Origin and Habitat

Japan and Taiwan are the places where you can find Amano Shrimp. They can be found in fast-flowing rivers, streams, and brackish estuaries. They live to live in aquatic plants, rocks or other submerged objects.

The life span of Amano Shrimp

With the proper maintenance and a well-maintained tank, Amano Shrimp can live for up to 3 years. However, some people can extend their lives by five years with special treatment. Their lifespan can be affected by genetics, water quality, nutrition, and the general tank environment. Routine care, a nutritious diet, and a stress-free environment can ensure the health and lifespan of Amano Shrimp.


Amano Shrimp range in size because of characteristics like age, sex, and general health. Mature male Amano Shrimp normally grow to 2 inches.

Amano Shrimp, an aquarium cleaner

Amano Shrimp are commonly considered helpful aquarium cleaners. These freshwater shrimp are noted for their habit of collecting and eating debris at the bottom of lakes and ponds. Amano shrimp are excellent tank cleaners since they actively seek out and consume decaying plant matter, leftover food, and other organic trash. They are useful for keeping water clean because they consume uneaten fish food.

Amano shrimp, A food for other fish

Amano shrimp are popular among aquarium keepers as a supplementary food item for their fish. Due to their small size and transparent appearance, Amano shrimp are an easy target for predatory fish. Adding Amano shrimp to an aquarium allows predatory fish to exercise their hunting instincts in a controlled environment. This method improves the predator fish’s environment and gives them more food options.

Minimum tank size for Amano Shrimp

Amano Shrimp are highly sociable, group-oriented Shrimp that do best in communities. With greater room to swim and cleaner water, a 10-gallon tank is a minimum requirement for a school of 4 adult Amano Shrimp.

Amano Shrimp are picky eaters, so a well-planted aquarium with hiding spots and territories is essential; a 20-gallon tank would be better for better nourishment, giving more room to do that job.

How many Amano Shrimp are in a 3-gallons tank?

A 3-gallon tank is not recommended for Amano Shrimps.

Considering that an adult Amano Shrimp is about 2 inches long, a 3-gallon aquarium is insufficient for Amano Shrimps. The health of the Shrimp depends on the availability of suitable hiding places, plants, and swimming areas. Maintenance of water systems and monitoring water quality metrics are also important for their well-being.

You can keep guppies in a 3-gallon tank.

Keep reading: Number of Guppies vs Tank Gallon Size [Complete GUIDE]

Factors to Consider When Determining Tank Size for Amano Shrimp

A few considerations exist when deciding the best tank size for your Amano Shrimp. Characteristics include physical dimensions, activity levels, and social interactions with other fish.

Size of the Amano Shrimp

Amano Shrimp typically grow 2 inches; a 10-gallon tank is enough for 4 Amano Shrimp.

Aggression level

Amano Shrimp are peaceful; they have no territorial disputes and deficient aggression levels. Still, for safety factors, you need to properly supervise the tank to have a large amount of Amano Shrimp in a tank.

Hiding Places

A more natural and peaceful atmosphere can be achieved by giving them plenty of hiding places.

Your Amano Shrimp will appreciate the natural atmosphere you create with the help of live plants, pebbles, and driftwood.


while natural explorers, Amano Shrimp, need a substrate that doesn’t restrict their movement while they look for food. A sandy or fine-gravel ground is advised to simulate their natural habitat best and encourage natural browsing behaviour.


Ensure you have enough plants in your tank to absorb the carbon dioxide, nitrate, and other toxic waste from the fish excretion.

Java plant, Hornwort, and Utricularia Graminifolia are the most likely plants for Amano shrimps.

Amano Shrimp can survive on their own with just plants and pests. So plantation is essential.


To grow, Amano Shrimp need clean, well-filtered water. Sponge filters are recommended, as Amano Shrimps are small tank dwellers. To keep your filter running, choose and maintain one that fits your tank.


Amano Shrimp need a steady and warm water temperature of 65-78°F. A high-quality submersible heater that fits your tank is crucial. To maintain a stable temperature, check the temperature using a thermometer and make adjustments.


Amano Shrimp do not require intense lighting and may prefer low to moderate light levels.

Use 5 watts LED light which can save electricity and give you proper lighting.

Water Quality

Amano Shrimp flourish in a certain set of water parameters. They prefer a pH range of 6.5 to 8, a water hardness of 6-8 dGH, a salinity of 1.5 – 2.5, KH 1-2, and a 65-78°F temperature range.

It is critical to keep water parameters consistent by making regular water changes and monitoring the tank’s water chemistry. Using a high-quality filter can also assist in maintaining.

Keep reading: How to Naturally Lower PH in Aquarium.

How many Amano Shrimp are in a 10-gallons tank?

Keeping a small school of Amano Shrimp in a tank of 10 gallons is possible. However, remember that these Shrimps require a small tank size.

Considering that an adult Amano Shrimps is about 2 inches long, a 10-gallon aquarium might house about 4 Amano Shrimps. The health of the Amano Shrimp depends on the availability of suitable hiding places, plants, and swimming areas. Maintenance of water systems and monitoring water quality metrics are also important for their well-being.

Remember! For such an overcrowded tank, 20% fewer Amano shrimps should be accommodated to maintain the water quality.

How Many Amano Shrimps in a 55-Gallon Tank?

A 55-gallon tank is recommended for 22 Amano Shrimps.

Considering that an adult Amano Shrimp is about 2 inches long, a 55-gallon aquarium is sufficient for 22 Amano Shrimps. The health of the Shrimp depends on the availability of suitable hiding places, plants, and swimming areas. Maintenance of water systems and monitoring water quality metrics are also important for their well-being.

55 Gallon tank is fit for fish like Axolotl (The walking fish).

Keep reading: Number Of Axolotl (Mexican Walking Fish) Vs Tank Gallon Size [Complete GUIDE]

Amano Shrimp compatibility with other fishes:

Ideal Tank mates of Amano Shrimp:

When choosing tank mates for Amano Shrimp, selecting fish that can tolerate the same water conditions and are not aggressive or territorial is important.

  • Bristlenose Pleco, Bamboo Shrimp, Vampire Shrimp, Red Cherry Shrimp, Crystal Red Shrimp, Snails, and Guppies, are the best tank mates for Amano Shrimp.
  • Avoid territorial, aggressive, fast swimmers and those fishes who do fin nipping, like larger cichlids, Goldfish, Axolotls, aggressive Barbs (like Tiger Barbs), or aggressive Catfish species.

Furthermore, it is recommended not to overload the aquarium since doing so can lead to poor water quality and discomfort for the shrimp and other fishes.

Amano Shrimp in a glass bowl

Keeping Amano Shrimp in a glass bowl is good for shrimp but not a good practice for them.

Amano Shrimp can only flourish in conditions with plenty of room to swim, good water quality, and enough filtration.

Shrimp kept in glass bowls may suffer from poor water quality and other health problems due to the bowls’ tiny size, lack of filtration, and inadequate aeration. In addition, Amano Shrimp are curious, active Shrimp that benefit from having lots of room to swim around.

This is why it’s crucial to supply your Amano Shrimp with a clean, well-maintained tank of the appropriate size.

How Many Amano Shrimps in a 15-Gallon Tank?

Fifteen gallons of the tank can keep up to 6 Amano Shrimps.

A person having less space in the home can even use a 5-gallon tank in compulsion and easily accommodate 2 Amano Shrimps.

You can keep guppies in a 15-gallon tank.

Keep reading: Number of Guppies vs Tank Gallon Size [Complete GUIDE]

Orientation of Amano Shrimp in a tank

Single Amano Shrimp in a Tank

Amano Shrimp is a schooling creature and cannot accept living alone. The boredom will make your Shrimp ill or even can cause death. It is recommended to have a school of Amano Shrimps in a tank.

Male to female ratio

One male for every two females is the standard recommendation. This proportion helps spread out any aggressive tendencies and lessens the likelihood of widespread violence between males.

Only male-oriented tank

Having multiple male Amano Shrimps in the same tank can cause issues.

Male Amano Shrimp aggression Factors, including tank size, available territories, and water quality, can all affect the behaviour of Amano Shrimp. Aggression is more likely to happen in tanks that are too small or don’t provide enough hiding places.
Therefore, a 2:1 male-to-female ratio is recommended in a tank.

Breeding of Amano Shrimps

Certainly! Here are some key points about breeding Amano Shrimps:

  • Set up a separate breeding tank with plants and hiding spots.
  • Choose a healthy male and female for breeding.
  • Condition the pair with a varied diet of live or frozen foods.
  • Introduce the female to the male’s tank.
  • Remove the male after completion of fertilization to protect the eggs and female.
  • Remove the female, too, after the Amano shrimp fry’s birth.
  • Feed the fry infusoria or specialized fry foods.
  • Maintain good water quality with slightly warmer temperatures and soft to slightly acidic water conditions.

Diet Plan of Amano Shrimp

Commercial Foods: Offer high-quality sinking shrimp pellets or shrimp-specific algal wafers. These pellets provide a balanced shrimp diet with vital nutrients.

Vegetables: Amano shrimp-like blanched spinach, zucchini, and cucumber. Before adding them to the tank, boil the vegetables until softened and then make them cool again; otherwise, the shrimps will attack the food, and their mouths will burn.

Live or Frozen food: Amano shrimp-like daphnia, brine shrimp, and bloodworms. As occasional treats, these can enrich their diet.

Leftovers: Amano shrimp are excellent scavengers who eat leftover fish food, rotting plant matter, and other organic trash in the tank. However, they shouldn’t only eat detritus.

Feeding frequency: Feed Amano shrimp once or twice a day, only as much as they can eat in a few minutes. Overfeeding lowers water quality and harms shrimp.

To maintain water quality, watch the shrimp eat and eliminate any uneaten food after feeding. Amano shrimp need a diversified diet to be healthy.

Molting of Amano Shrimp

Molting is normal for Amano shrimp and other shrimp. Here are some key facts about the molting process:
Cycle of Molting: Amano shrimp molt to grow and replace their exoskeleton, which is their protective shell on the outside. There are different parts to the molting cycle, such as pre-molt, molt, and post-molt.
Before molting, Amano shrimp show signs of getting ready for it by doing certain things. Some of these signs are less movement, less hunger, and a lighter colour on their exoskeleton.
Molting Stage: When the Amano shrimp is molting, it will remove its old shell. Most of the time, the shrimp will find a safe place and not do much during this time. The old exoskeleton cracks and falls off slowly, showing a new soft, easily broken one.
Post-Molt Stage: Once the Amano shrimp has shed its old shell, it will have a new one that is soft and flexible. The shrimp is especially easy to eat during this time, so it may hide until its new shell gets hard.
Eating the Old Exoskeleton: Amano shrimp can eat their old exoskeleton after they shed it. This gives the new shell important nutrients, especially calcium, which helps it get more substantial.
Growth and Regeneration: After molting, Amano shrimp grow, and their new shell gets harder and darker over time. The time between molts depends on things like the temperature of the water, the food they eat, and how fast each shrimp grows.
It’s essential to ensure the climate is suitable for molting to go well.
This means keeping the water parameters stable, giving the shrimp places to hide or plants to feel safe while they are molting, and ensuring they have a healthy diet to support their growth and exoskeleton formation.

Disease and treatment

Following is the list of diseases which is common in Amano Shrimp:

  • Fin and Tail Rot
  • Columnaris
  • Viral Haemorrhagic Septicaemia
  • Dropsy
  • Pop-eye Disease
  • Eye-cloud / Cloudy Eyes
  • Mouth Fungus
  • Furunculosis
  • Fungal Infections
  • Velvet
  • Ich
  • Anchor Worms
  • Lice
  • Hole in the Head
  • Swim Bladder Disorder
  • Tumours
  • Gill Parasites
  • Ammonia Poisoning
  • Slime Disease


The following symptoms should be seen in the body of Amano Shrimp related to the above-mentioned diseases:

  • Darkness in the colour
  • Swollen anus
  • Blotted belly
  • Swelling of eyes
  • Difficulty in swimming
  • Loss of appetite
  • White patches around the mouth
  • Rubbing body against the hard surfaces
  • Hollow pits on the head
  • Floating upside down


  • Regular change of water
  • Check the pH of the water
  • Check the temperature of the water
  • Avoid overfeeding
  • Vaccination should be done with proper consultation with the veterinarians.
  • Disinfectants should be added to the water
  • Quarantine the infected Shrimp
  • Feed vitamin riched food to infected Shrimp
  • Ammonia level should be maintained at zero inside the tank
  • Decontamnates like iodine should be used in water.

Number of Amano Shrimp in different kinds of tanks

How many Amano Shrimp are in a 20-gallons tank?

A 20-gallon tank is good enough for keeping 8 Amano Shrimp. A 20-gallon tank is a big-sized tank for Amano Shrimp.

How many Amano Shrimp are in a 25-gallons tank?

A 25-gallon tank is good enough for keeping 10 Amano Shrimp.

You can also keep Neon Tetras in a 25-gallon tank.

Keep reading: Number of Neon Tetras vs. Tank Gallon Size [Complete GUIDE]

How many Amano Shrimp are in a 30-gallons tank?

A 30-gallon tank is good enough for keeping 12 Amano Shrimp. You can also keep Glofish in a 30-gallon tank.

Keep reading: Number of Glofish vs. Tank Gallon Size [Complete GUIDE]

How many Amano Shrimp are in a 75-gallons tank?

A 75-gallon tank is good enough for keeping 30 Amano Shrimp.

Keeping 20% less Amano Shrimp in large crowded tanks is recommended.

If you are an aquarium explorer and want to have fun in your aquarium, You can keep cichlids in a 75-gallon tank.

Keep reading: Number of Cichlid vs. Tank Gallon size [Complete GUIDE]

How many Amano Shrimp are in a 100-gallons tank?

A 100-gallon tank is good enough for 40 Amano Shrimp. Using the 100-gallon tank for keeping Amano shrimps is a good fit, as Amano shrimps like to live in that sized tank.

Keeping 20% less Amano Shrimp in large crowded tanks is recommended.

If you are an aquarium explorer and want to have fun in your aquarium, You can keep mollies in a 100-gallon tank.

Keep reading: Number of Mollies vs. Tank Gallon Size [Complete GUIDE]

How many Amano Shrimp are in a 125-gallons tank?

A 125-gallon tank is good enough for keeping 50 Amano Shrimp. Keeping 20% less Amano Shrimp in large crowded tanks is recommended.

If you are an aquarium explorer and want to have fun in your aquarium, You can keep mollies in a 125-gallon tank.

Keep reading: Number of Mollies vs. Tank Gallon Size [Complete GUIDE]

Aquarium Decorations for Amano Shrimp

Amano Shrimp’s health may depend partly on the ornaments you use in their aquarium. Providing them with places to hide and establish territories can help keep them calm and content in their tank.

Amano Shrimp tanks can be decorated with pebbles, driftwood, and live plants. They can also create an environment that looks and feels just like the animal’s native habitat.

Some aquarium ornaments, including rocks with sharp or rough edges, can be dangerous to your Amano Shrimp. Before adding anything to the aquarium, a thorough inspection should be performed to identify and eliminate any hazards.


  • The health and happiness of your Amano Shrimp depend on you providing an environment that’s just right for them.
  • A school of 4 should have at least 10 gallons.
  • In addition to clean water and effective filtration, a properly planted aquarium with plenty of hiding places and territory is essential for Amano Shrimp.
  • When deciding on the optimal tank size, it’s also essential to consider the Shrimp’s size, aggressiveness, and compatibility with other tankmates.
  • These graceful Shrimp can thrive in the right conditions for five years.