How Many Amano Shrimp Should I Have For A 40 Gallon Tank?

How Many Amano Shrimp Per Gallon? The Answer & Basic Care Guide
How Many Amano Shrimp Per Gallon? The Answer & Basic Care Guide from

How Many Amano Shrimp Should I Have for a 40 Gallon Tank?

Understanding the Basics of Amano Shrimp

Amano shrimp, also known as Caridina multidentata, are a species of freshwater shrimp native to Japan. They are small, hardy creatures that are popular among aquarists due to their ability to scavenge for food and clean the aquarium of algae. These shrimp grow to an average size of 1-2 inches, and can live up to three years in the right environment. Amano shrimp are also incredibly active and entertaining to watch, making them a great addition to any aquarium.

The Ideal Tank Setup for Amano Shrimp

In order to keep Amano shrimp healthy and happy, they need an environment that meets their specific needs. A 40 gallon tank is an ideal size for a few Amano shrimp, as it allows them enough space to explore while also providing plenty of hiding places. The tank should be well-filtered and have a cover to prevent them from jumping out. It should also have plenty of live plants and driftwood, as this provides places for them to hide and feed on algae. The water temperature should be kept between 68-78 degrees Fahrenheit and the pH level should be between 6.0-7.5 for optimal conditions.

How Many Amano Shrimp to Keep in a 40 Gallon Tank

The number of Amano shrimp that can be kept in a 40 gallon tank will depend on the size of the tank, the types of other fish and invertebrates that are also present, and the overall health of the aquarium. In general, it is recommended to keep one Amano shrimp for every 10 gallons of tank water. Therefore, in a 40 gallon tank, you should keep four or five Amano shrimp. It is important to note that Amano shrimp are not territorial and prefer to live in large groups, so having more than five shrimp in the tank is not a problem.

Tips for Maintaining a Healthy Environment for Amano Shrimp

To ensure that your Amano shrimp stay healthy and happy, it is important to provide them with a clean and well-maintained environment. Regular water changes are essential to keep the tank free of toxins and debris. In addition, the substrate should be vacuumed regularly to remove any uneaten food or waste. It is also important to ensure that there is plenty of algae in the tank for the shrimp to feed on, as this is an important part of their diet. Finally, it is important to provide the tank with plenty of hiding places and plants to keep the shrimp feeling safe and secure.


Amano shrimp are a great addition to any aquarium, and with the right care and environment, they can be very rewarding to keep. When it comes to stocking a 40 gallon tank with Amano shrimp, it is recommended to keep four or five shrimp to provide them with enough room to explore and enough companions to feel secure. With the right care and maintenance, your Amano shrimp will thrive in their new environment.

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