Amano Shrimp – Care, Size, Tank Mates & Full Details You Need!

Amano Shrimp, hailing from the freshwater habitats of Taiwan and Japan, are one of the most celebrated freshwater shrimps in aquarium circles.

Known by a variety of names such as Japanese Shrimp, Yamato Shrimp, and Algae Shrimp, these hardy creatures have a wide fan base due to their unique characteristics and minimal care requirements.

The scientific names, Caridina multidentata and Caridina japonica, are attributed to these fascinating creatures.

However, they owe their popularity and their common name to Takashi Amano, a revered aquarist and photographer who first introduced them to aquarium enthusiasts worldwide.

Recognized for their ability to consume copious amounts of algae, Amano shrimp have proven to be efficient tank cleaners, providing a naturally clear and healthy environment for other aquatic species.

Amano Shrimp, a favored species among aquarists worldwide, are renowned for their versatility and striking ability to manage tank cleanliness.

Welcome to our comprehensive guide on Amano Shrimp, a popular aquatic companion renowned for its diligent algae-eating habits.

This guide aims to equip you with in-depth knowledge about this fascinating species to help you provide them with the best care possible.

Quick Stats About Amano Shrimp

Care Level: Easy
Temperament: Peaceful
Color: Transparent/greyish body
Lifespan: 2-3 years
Size: Up to 2 inches
Diet: Omnivore
Family: Atyidae
Minimum Tank Size: 10 gallons
Tank Setup: Freshwater, heavily planted
Compatibility: Peaceful community fish, other shrimps, and snails

Appearance of Amano Shrimp

Amano shrimp are truly remarkable creatures when it comes to their appearance. Their bodies, ranging from translucent grey to light brown, can grow up to two inches in length, marking them as one of the more sizable options within the dwarf shrimp varieties.

Their distinctive characteristic is a series of dotted lines running across the length of their body, which can change color based on their diet.

For example, a diet rich in algae and plant matter can give these dots a greenish hue, adding to their unique appeal.

The ability of Amano shrimp to camouflage within their surroundings is another interesting trait.

Their coloration blends seamlessly with various tank environments, providing them with a strategic advantage both in the wild and within aquarium settings.

Natural Habitat of Amano Shrimp

Amano shrimp originate from freshwater streams and rivers of East Asia, including Japan and Taiwan. Their natural habitat is rich with vegetation and algae, which they happily feast on.

These streams usually have a rocky or gravelly substrate that facilitates hiding and foraging.

The water conditions in these habitats are temperate, with temperatures generally between 22 to 28 degrees Celsius.

A moderate pH level of 7.0 to 7.6 and good water flow are other characteristics of the Amano shrimp’s natural habitat.

Origin and Distribution of Amano Shrimp

Caridina multidentata, commonly known as Amano shrimp, were first introduced to the aquarium world by renowned Japanese aquarist Takashi Amano.

The species quickly gained popularity due to their prolific algae-eating capabilities and amicable temperament.

Though native to Japan and Taiwan, the Amano shrimp’s popularity in the aquarium trade has led to its distribution worldwide.

However, they remain a rare sight in their natural habitat due to their high demand in the aquarium hobby. Despite their popularity, they still rank second to the Cherry shrimp in terms of preferred aquarium shrimp species.

Growth, Size & Lifespan of Amano Shrimp

Amano shrimp start their lives as minuscule larvae but grow rapidly to reach their adult size. With a growth potential of up to 2 inches, they are one of the larger species of dwarf shrimp available in the aquarium trade.

One of the reasons for their popularity among hobbyists is their relatively long lifespan. In optimal conditions, these hardy shrimp can live for up to 3 years.

However, the first few weeks after introducing them to a new tank are critical. It’s important to monitor their adaptation and ensure they’re getting the right nutrition.

Get ready to delve deeper into the intriguing world of Amano Shrimp, focusing on their behavior, temperament, and ideal tank setup.

We aim to give you a comprehensive guide, brimming with details, to assist you in creating a perfect home for your aquatic pals.

Amano Shrimp Behavior and Temperament

Amano Shrimp are noted for their peaceful and active nature. They spend much of their time exploring the tank, grazing on algae, and interacting with their environment.

Known as bottom dwellers, you’ll often find them scurrying around the tank floor, sifting through the substrate in search of food.

They are not aggressive, but their size can be a bit intimidating to smaller species in the tank. However, they mostly keep to themselves, focusing on their endless quest for algae and detritus.

Amano Shrimp are largely nocturnal, becoming even more active when the lights go off.

Tank Setup for Your Amano Shrimp

Setting up an ideal tank for your Amano Shrimp is a detailed process, and several factors should be considered.

Let’s explore these crucial elements one by one.

Tank Size

Amano Shrimp require plenty of space to scuttle around and forage. A minimum tank size of 10 gallons is recommended. However, for each additional shrimp, it’s advisable to add another 2 gallons to maintain comfortable living conditions.


A darker substrate is preferable for these shrimp, as it mimics their natural habitat and makes them feel secure. Sand or fine gravel are excellent choices as they mimic the streambeds where Amano Shrimp naturally thrive.

Decorations and Hiding Spots

To make your Amano Shrimp feel at home, add plenty of decorations like driftwood, rocks, or aquatic plants. These provide hiding spots and areas for the shrimp to explore.

More importantly, these decorations also promote algae growth, providing a natural food source for the shrimp.

Water Parameters

Maintaining the right water conditions is crucial for your Amano Shrimp’s health. Keep the temperature between 22-28°C, and maintain a pH level of 6.5 to 7.5.

Additionally, the water hardness should be between 6-8 dGH. Regular water changes are necessary to maintain these parameters and to prevent a build-up of harmful toxins.

Filtration and Aeration

Amano Shrimp thrive in well-oxygenated water, and they prefer a moderate current that mimics their natural stream habitat. Therefore, a good quality filter is essential.

Sponge filters are often recommended as they provide both mechanical and biological filtration without the risk of the shrimp getting sucked in.


Amano Shrimp don’t have specific lighting needs, but remember that adequate light helps promote the growth of algae, an essential part of the shrimp’s diet.

Too much light, however, can lead to excess algae, which may affect the overall water quality. Aim for a balanced light cycle, mimicking natural day and night conditions.

Tank Mates

Due to their peaceful nature, Amano Shrimp get along with most tank mates that aren’t aggressive or large enough to view them as food.

Small, peaceful fish like Tetras and Guppies make great companions. Other species of dwarf shrimp and snails also make good tank mates.


While Amano Shrimp are fantastic algae eaters, they need a more varied diet to remain healthy. Supplement their diet with shrimp pellets, blanched vegetables, and occasional protein sources like brine shrimp or bloodworms.

To summarize, Amano Shrimp are a joy to keep, given their engaging behavior and unique characteristics.

By maintaining the right tank conditions and providing a varied diet, you can ensure these delightful creatures thrive in your aquarium. Happy shrimping!

Maintaining Amano Shrimp Tanks

Taking care of your Amano Shrimp involves more than feeding and observing their playful behavior. Regular tank maintenance is crucial to keep these delightful creatures healthy and content.

In this section, we’ll go through everything you need to know about maintaining your Amano Shrimp’s tank.

A clean, well-kept tank not only adds aesthetic value but also provides a nurturing environment for your shrimp. Here are some vital factors to consider when it comes to Amano Shrimp tank maintenance:

Regular Water Changes

Water changes are a crucial part of aquarium upkeep. In an Amano Shrimp tank, it’s recommended to change 25-30% of the water weekly. This action helps prevent the buildup of harmful toxins and promotes better health for your shrimp. Make sure the new water matches the old water in temperature and pH to avoid shocking the shrimp.

Cleaning the Tank and Decorations

While Amano Shrimp are known for their cleaning abilities, it’s important to assist them in this endeavor. Regularly clean the tank and its decorations to prevent harmful algae overgrowth and bacteria. However, be cautious not to clean too thoroughly as some bacteria are beneficial and aid in the breaking down of waste material.

Filter Maintenance

Your aquarium’s filter is an essential tool in maintaining water quality. Ensure you clean the filter periodically, but be careful not to destroy the beneficial bacteria that build up on the filter.

A good practice is to rinse the filter material in tank water (which you remove during the water change) instead of tap water to preserve these helpful microorganisms.

Monitor Fish Health

Finally, be sure to monitor the health of your shrimp. Healthy Amano Shrimp are active, have clear shells, and display a strong appetite.

If you notice any changes in behavior, appearance, or eating habits, it could indicate a problem. Regular health checks can help you spot issues early and take necessary action promptly.

In conclusion, maintaining a healthy tank for your Amano Shrimp involves a mix of regular water changes, cleaning routines, filter upkeep, and health monitoring.

Implement these practices to provide your Amano Shrimp with the best environment possible. Remember, a happy shrimp makes for a happy aquarium!

Acclimating Amano Shrimp

Acclimating your new Amano Shrimp to their tank is a process that shouldn’t be rushed. The objective here is to slowly introduce your shrimp to the new water parameters, reducing shock and stress.

Here’s a simple step-by-step guide:

  1. Temperature Equalization: First, float the bag containing the shrimp in your aquarium for about 15-20 minutes. This step allows the water in the bag to reach the same temperature as the tank water.

  2. Gradual Mixing: Next, open the bag and add a small amount (about a cup) of your tank water into the bag. Repeat this every 10-15 minutes for about an hour.

  3. Releasing the Shrimp: After the hour, gently use a net to transfer the shrimp into your tank. Avoid adding the bag water into your tank to prevent any potential contaminants from entering your aquarium.

Amano Shrimp Diet and Feeding

Amano Shrimp have a diverse diet, making them excellent for keeping tanks clean. They’re proficient algae eaters and also feed on leftover fish food. Despite their efficient cleaning skills, they do require supplemental feeding.

Here’s a detailed breakdown:


Amano Shrimp feed extensively on various types of algae, including green algae, hair algae, and even black beard algae. This attribute makes them a great addition to tanks battling with algae issues.

Leftover Food

These shrimp are scavengers and will eat leftover food that falls to the bottom of the tank. This eating habit helps keep your tank cleaner and reduces waste buildup.

Supplemental Feeding

While they are excellent cleaners, Amano Shrimp need additional food sources. You can provide specialized shrimp or sinking pellets, blanched vegetables (like zucchini, spinach, or peas), and even pieces of fruit.

Feeding Tips

  • Feed your shrimp 1-2 times a day, only as much as they can consume in a couple of hours. Overfeeding can lead to poor water quality.

  • Rotate their diet to ensure they’re receiving all necessary nutrients.

  • Remove uneaten food after a few hours to prevent it from decomposing and fouling the tank water.

In conclusion, while acclimating Amano requires patience and care, the process ensures a smoother transition for these remarkable creatures.

Furthermore, understanding their dietary needs helps promote their health and longevity.

Amano Shrimp Tank Mates

Selecting the right tank mates for your Amano Shrimp is essential. They thrive in a peaceful community tank, so it’s important to choose non-aggressive fish.

Here are five suitable tank mates:

  1. Neon Tetras: Known for their bright colors and peaceful nature, Neon Tetras coexist well with Amano. They are unlikely to bother the shrimp due to their small size and calm temperament.

  2. Harlequin Rasboras: These small, peaceful fish make good tank mates. They stay towards the middle and top of the tank, leaving the bottom to the shrimp.

  3. Celestial Pearl Danios: Their small size and docile nature make them less likely to harass the shrimp. Plus, they add a vibrant touch to your tank.

  4. Guppies: These are peaceful community fish that usually ignore shrimp. They come in many vibrant colors, adding life to your aquarium.

  5. Cherry Barbs: Cherry Barbs are peaceful schooling fish. They prefer swimming in the middle of the tank, thus leaving the bottom free for the Amano.

However, certain fish are not suitable for sharing a tank with Amano Shrimp.

Here are five to avoid:

  1. Cichlids: Larger cichlids, such as Oscars or Jack Dempsey Fish, can be problematic as they might see the shrimp as food.

  2. Puffers: Known for their aggressive behavior and large appetites, Puffers will likely prey on the shrimp.

  3. Goldfish: Despite their peaceful nature, Goldfish might try to eat smaller tank mates, including Amano.

  4. Bettas: Betta fish can be aggressive and territorial, often targeting smaller creatures.

  5. Large Catfish: Species such as the Pictus Catfish can pose a threat due to their predatory nature.

Breeding Amano Shrimp and Fry Care

Breeding Amano Shrimp is a bit more challenging than other shrimp species, but with careful attention, you can be successful.

Here are some crucial steps:

  1. Sexing: The first step in breeding Amano Shrimp is identifying males from females. Females are larger with a row of round dots along their body, while males are smaller with a more streamlined row of dots.

  2. Breeding Environment: The shrimp will breed in a freshwater tank, but the offspring require brackish water to survive. Keep a separate tank with brackish water for the larvae.

  3. Spawning: When ready to spawn, the female will release pheromones into the water. This triggers the males to chase the female, with one eventually succeeding in fertilizing the eggs.

  4. Larval Care: Once hatched, the larvae need to be moved to the brackish water tank. They are planktonic, meaning they’ll float in the water. Feed them with phytoplankton and baby brine shrimp.

  5. Returning to Freshwater: After approximately 30-60 days, when the larvae undergo metamorphosis into juvenile shrimp, they can be moved back to freshwater.

With the right tank mates and a thorough understanding of their breeding requirements, you can create a harmonious environment for your Amano Shrimp to thrive.

Ensuring the well-being of your aquatic pals is the most important aspect of aquarium care. Let’s dive into understanding the signs of stress in Amano Shrimp, identifying their common health issues, and providing them with a healthy environment.

Signs of Stress in Amano Shrimp

If your Amano Shrimp are stressed, they will exhibit certain signs. Being attentive to these changes can aid in their swift recovery:

  1. Erratic Behavior: Shrimp darting around the tank or trying to climb out may be stressed due to changes in water parameters or the presence of predators.

  2. Color Changes: Healthy Amano Shrimp have a clear or slightly gray color. If they turn opaque or white, this can indicate stress.

  3. Inactivity: While Amano Shrimp are not always in constant motion, a shrimp that is lethargic or hiding for extended periods may be stressed or ill.

  4. Loss of Appetite: This can be a sign of stress or disease. A healthy shrimp will be a keen eater, so any change in feeding behavior warrants attention.

Common Health Issues and Treatments for Amano Shrimp

Here are a few common health issues that Amano Shrimp may encounter:

  1. Bacterial Infections: Bacteria can cause issues such as shell disease. Signs include spots or pits on the shrimp’s shell. Antibiotic treatments, available at pet stores, are effective remedies.

  2. Fungal Infections: White or fuzzy patches on the shrimp can indicate a fungal infection. Antifungal treatments can be used to treat these.

  3. Parasites: Look out for signs like abnormal growths on your shrimp. Treatment depends on the type of parasite; consult with an aquarium professional for advice.

Additional Tips for a Healthy Aquarium

Creating a healthy environment for your Amano is the best way to prevent illness and stress:

  1. Water Quality: Maintain the correct water parameters for your shrimp. Regular testing and water changes are crucial.

  2. Feeding: Provide a balanced diet and avoid overfeeding, which can lead to poor water quality.

  3. Quarantine New Additions: Always quarantine new tank mates to prevent the spread of diseases.

Should You Get an Amano Shrimp for Your Aquarium?

Amano are excellent additions to most aquariums. They are hardy, peaceful, and great at controlling algae. However, they require a bit of care and attention to their environment.

If you’re ready to provide that, then Amano Shrimp can be a wonderful choice. Their intriguing behaviors will provide endless enjoyment, and their cleaning skills will be a great asset to your tank.

Amano are a fantastic species to keep in your aquarium. Their unique personality and utility make them worth considering for any hobbyist.

Remember, proper care and attention to their health are key to enjoying these fascinating creatures to their fullest. Happy shrimp keeping!

Let’s delve deeper into the world of Amano and explore their conservation status, availability, pricing, and some frequently asked questions.

Conservation Status of Amano Shrimp

Currently, Amano Shrimp is not listed on the IUCN Red List, indicating that they are not currently considered endangered or threatened.

However, like all species, they may be affected by factors such as habitat loss or pollution. As pet lovers and environmental stewards, we should aim to source our aquarium species responsibly, supporting sustainable practices and suppliers.

Availability and Pricing of Amano Shrimp

Amano are widely available in most local aquarium stores and online. They’re popular for their voracious appetite for algae and easy care, making them a favorite among hobbyists.

Their price can vary, typically ranging between $2 to $6 per shrimp, depending on the size and health of the individual. Do remember to source your shrimp from reputable sellers to ensure you’re getting a healthy specimen.

Frequently Asked Questions About Amano Shrimp

Q – Are Amano Shrimp easy to care for?

Ans – Yes, they are generally considered a hardy species and can adapt to various water conditions. However, they do best in well-maintained tanks with stable water parameters.

Q – How long do Amano Shrimp live?

Ans – On average, Amano Shrimp have a lifespan of 2-3 years, although some can live longer with excellent care.

Q – Can Amano Shrimp breed in freshwater?

Ans – While Amano Shrimp can mate in freshwater, the larvae require brackish or saltwater to survive. This makes breeding Amano Shrimp in home aquariums quite challenging.


Amano Shrimp are a compelling choice for both seasoned aquarists and beginners. Their hardy nature, peaceful temperament, and appetite for algae make them a rewarding addition to most freshwater aquariums.

However, like all creatures, they require care, attention, and a well-maintained environment to thrive.

With proper care and a suitable environment, Amano will not just survive in your aquarium, but truly thrive.

Whether you’re a seasoned aquarist or just starting your journey, Amano could be the perfect addition to your underwater community.