Quick answer: the easiest Amano shrimp breeding setup is a separate, simple larval aquarium rather than trying to convert the adult planted tank. Keep mature Amanos and berried females in freshwater. After the larvae hatch, collect them and move them into a measured saline rearing system with gentle aeration, stable temperature and very fine suspended food. Once they metamorphose into juvenile shrimp, reduce salinity gradually and return them to freshwater.
Amano breeding is more technical than raising Cherry Shrimp, but the equipment itself can be simple. Precision and consistency matter more than an elaborate aquascape.
Why the larval tank should be separate
Adult Amanos live in freshwater, while their larvae require a saline developmental stage. Those incompatible requirements make a separate larval tank the logical solution. A dedicated tank also makes the tiny larvae easier to see, feed and siphon around during maintenance.
Do not salt the adult planted aquarium. Leave the berried female in stable freshwater and prepare the larval tank before hatching begins.
Basic equipment list
- Small aquarium or food-safe clear container
- Marine aquarium salt mix
- Refractometer or calibrated salinity meter
- Air pump and bare airline or gentle air stone
- Thermometer
- Adjustable light or simple aquarium light
- Fine larval food or live phytoplankton
- Small siphon tubing or pipette for maintenance
- Conditioned freshwater for top-off and later transition
A bare-bottom container is usually easier than a planted tank because you can see settled debris and larvae clearly.
What tank size should you use?
There is no one required volume. Small systems are easy to illuminate and observe but change quickly when food, evaporation or temperature shifts. Larger systems are more stable but use more saltwater and can make tiny larvae harder to locate.
A modest container of several gallons is a practical compromise for many hobby breeders. Whatever size you choose, avoid overstocking larvae and keep the water depth and aeration manageable.
Prepare the saline water before the larvae hatch
Use a marine aquarium salt mix rather than table salt or simple freshwater aquarium salt. Mix the salt completely in a separate container, match temperature and verify salinity with a refractometer or salinity meter.
Research on Caridina multidentata has demonstrated successful larval development across roughly 17–34 ppt under controlled conditions. Different hobby protocols use different points within strong brackish to marine-strength water. Choose a documented target and hold it consistently rather than changing salinity every day.
For the biology and research behind that range, read our Amano salinity guide.
Should the breeding tank be cycled?
Larval systems are unusual because strong conventional filters can trap the animals. You still need excellent water quality, but it is often maintained through low stocking, controlled feeding, gentle aeration and careful partial water changes rather than a powerful filter.
If you use biological media, keep it protected from larvae and avoid flow strong enough to pin them. Some breeders mature the larval water or container in advance to develop a stable microbial community. Regardless of method, ammonia and nitrite must be controlled.
Use gentle aeration
The larvae are planktonic and benefit from gentle water movement that keeps food suspended and maintains oxygen. A bare airline producing a slow stream of bubbles can be enough. The goal is circulation, not a rolling boil.
If larvae are constantly thrown around the tank, reduce the airflow. If the surface is completely stagnant and food settles immediately, increase it slightly.
Lighting and larval collection
Newly hatched Amano larvae are attracted to light. Breeders can use a small flashlight in a darkened room to concentrate larvae in one area, then collect them carefully with a pipette, turkey baster or small cup.
Avoid fine mesh nets that may injure tiny larvae. Work slowly and transfer as little debris from the adult tank as practical.
When should you move the larvae?
Prepare everything before the expected hatch. Once the larvae are free-swimming, collect them promptly and place them in the saline system. The adult female remains in freshwater.
If you are unsure whether the female is truly close to hatching, monitor the egg mass for developed eyes and changes in appearance rather than moving the adult back and forth between tanks repeatedly.
What do Amano larvae eat?
Amano larvae need microscopic or extremely fine suspended food. Live phytoplankton is popular because it stays in the water column and can be available over a long period. Fine spirulina, microalgae concentrates and appropriately sized commercial larval diets may also be used.
The feeding challenge is balance: too little food can starve larvae, while too much can create ammonia, bacterial blooms and oxygen depletion. Continue with our Amano larval feeding guide for detailed feeding strategy.
Water changes in a larval tank
Small partial water changes help control waste, but siphoning around tiny larvae requires care. Shine a light from the opposite side so larvae move away from the siphon area, or use rigid airline tubing with a fine protective screen where practical.
Replacement water should match the tank's salinity and temperature. Pre-mix it completely. Never pour dry marine salt directly into a tank containing larvae.
Evaporation can change salinity quickly
Salt stays behind when water evaporates, so the tank becomes more saline as the water level falls. Top off evaporation with freshwater, not more saltwater. Use saltwater only to replace water physically removed during a water change.
Marking the normal water level on the tank makes evaporation easy to see.
Monitor salinity consistently
Small breeding systems can shift faster than full-size aquariums. Check salinity regularly with the same calibrated instrument. A refractometer should be calibrated according to its instructions, and electronic meters should be maintained as recommended by the manufacturer.
Do not chase tiny reading differences with abrupt additions. Stability is more useful than repeatedly overshooting the target in both directions.
Temperature matters too
Larval development speed and survival can be influenced by temperature. Keep the system stable rather than allowing large daily swings. If a heater is required, shield it so larvae cannot contact an overheated surface and use gentle circulation to distribute heat evenly.
How to recognize metamorphosis
For much of development, larvae remain free-swimming and look unlike adult shrimp. As metamorphosis occurs, successful young begin to resemble tiny Amanos and shift toward bottom-oriented, surface-grazing behavior.
This behavioral change is important because it signals the transition from saline larval rearing to freshwater juvenile husbandry.
Transition juveniles back to freshwater gradually
Do not scoop newly metamorphosed juveniles from marine-strength water and drop them directly into freshwater. Gradually reduce salinity by replacing portions of the rearing water with conditioned freshwater over time. Observe the juveniles closely and avoid very large one-step changes.
Once they are functioning normally in freshwater, move them into a mature grow-out tank with gentle filtration, biofilm and abundant grazing surfaces.
Common breeding-tank mistakes
- Salting the adult display instead of using a separate larval system
- Using table salt rather than marine aquarium salt mix
- Guessing salinity without a measuring instrument
- Using a strong filter intake
- Overfeeding microscopic food
- Ignoring evaporation
- Making large abrupt salinity corrections
- Moving juveniles directly from high salinity to freshwater
Frequently asked questions
Do I need live rock or marine sand?
No. A simple bare-bottom larval tank is often easier to control and observe. The goal is larval husbandry, not a reef aquarium.
Can I use a sponge filter?
Possibly, if flow and intake are extremely gentle, but many breeders rely primarily on aeration and careful water changes during the tiny planktonic stage.
How many larvae will a female produce?
Females can carry large numbers of small eggs, but hatch number and larval survival vary widely. Plan the system for water quality rather than assuming every larva will reach juvenile stage.
Can I use tap water to mix marine salt?
It depends on the source water. Purified water gives more control over the salt mix, while tap water may already contain substantial minerals. Whatever source you use, measure the final salinity rather than assuming.
Bottom line
A successful Amano breeding tank is intentionally simple: measured saline water, gentle aeration, microscopic food, stable temperature and careful maintenance. Keep the adults in freshwater, move only the larvae into the saline rearing system and transition juveniles back to freshwater after metamorphosis.
If you are still learning the species, start with our Amano freshwater breeding guide. For adult care, see the complete Amano shrimp care guide.