Ninja Shrimp

Quick Facts about Ninja Shrimp

Species NameCaridina serratirostris
Common NameNinja Shrimp
Care LevelIntermediate
LifespanUp to 2 years
Adult Size1-1.5 inches
Minimum Tank Size10 gallons
Temperature70-78°F (21-25°C)
Water ConditionsFreshwater, Stable
Optimal PH6.5-7.5
Optimal KH1-4

About the Ninja Shrimp

Ninja Shrimp, scientifically known as Caridina serratirostris, is a lesser-known freshwater shrimp species. Often overshadowed by its more popular cousins like the Cherry and Crystal Red Shrimp, the Ninja Shrimp is an interesting addition for those looking to diversify their aquarium inhabitants. Named for their elusive nature and darker coloration, these shrimp are both intriguing and somewhat mysterious.

Ninja Shrimp Lifespan

Typically, Ninja Shrimp have a lifespan of up to 2 years in captivity. However, as with many aquatic species, their longevity depends significantly on their care, environment, and diet.


Ninja Shrimp display a range of darker coloration, from deep browns to almost black hues. This darker coloration helps them blend seamlessly into their environment, giving them a secretive, “ninja-like” presence in the tank.

Average Size

The average adult size of Ninja Shrimp ranges between 1 to 1.5 inches, making them suitable for a variety of tank sizes.

Ninja Shrimp Care

When considering adding Ninja Shrimp to your aquarium, there are several factors to keep in mind to ensure their well-being and longevity.

Tank Size

A minimum tank size of 10 gallons is suggested for Ninja Shrimp. This allows them sufficient space to forage, breed, and exhibit natural behaviors.

How To Set Up Their Tank

Their tank setup should ideally mimic their natural freshwater habitats. This means incorporating plants, driftwood, and other natural decor to provide ample hiding spots and foraging areas. Floating plants can also be added to diffuse lighting and provide additional cover.

Lighting Requirements

Moderate lighting is suitable for Ninja Shrimp, especially if the tank contains live plants. However, ensure that there are enough shady spots or hiding places, as they tend to be more secretive.

Water Parameters (Water Type, Temperature, Hardness)

Ninja Shrimp thrive in freshwater with a stable environment. The optimal temperature range lies between 70-78°F (21-25°C), with water hardness being relatively soft to moderately hard.

Water PH

A pH range of 6.5 to 7.5 is optimal for the health and well-being of Ninja Shrimp.


Maintaining a consistent temperature range between 70-78°F (21-25°C) is crucial.


While moderate lighting is sufficient for tanks with Ninja Shrimp, ensuring there are areas of shade or hiding spots will provide them with a sense of security.

Best Substrate for Ninja Shrimp

A substrate consisting of fine sand or gravel is most suitable. This allows them to sift through, searching for food particles, and also provides a more natural environment.

Reproduction of Ninja Shrimp

Ninja Shrimp reproduce similarly to many other freshwater shrimp species. After mating, the female carries eggs until they hatch, releasing tiny shrimplets. In a well-set-up tank, these shrimplets have a good chance of survival and growth.

Disease Potential

Like many shrimp species, Ninja Shrimp can be susceptible to various diseases if water conditions deteriorate. Regular water changes, monitoring for signs of stress or disease, and a well-maintained environment are crucial for their health.

Food & Diet

Being omnivores, Ninja Shrimp have a varied diet. They feed on detritus, algae, and biofilm naturally present in the tank. Supplementing their diet with high-quality shrimp pellets, blanched vegetables, and occasional protein sources is beneficial.

Behavior and Temperament

Ninja Shrimp are peaceful and somewhat elusive. They are often seen foraging on the tank floor or hiding among plants and decor. Their secretive nature adds a layer of intrigue to their behavior.

Are Ninja Shrimp Reef Safe?

Ninja Shrimp are freshwater species and are not suited for reef or marine tanks.

Ninja Shrimp and Suitable Tank Mates

Given their peaceful nature, they can co-exist with a range of tank mates. Small, non-aggressive fish, snails, and other shrimp species are ideal companions. Avoid housing them with larger or predatory fish.


Breeding Ninja Shrimp requires maintaining optimal water conditions and providing a diet rich in nutrients. Once the conditions are right, breeding will typically occur naturally. After carrying the eggs, the female releases shrimplets, which, with the right care and environment, will grow into adults, continuing the cycle.

Ninja Shrimp FAQs (Frequently Asked Questions)