Japonica Shrimp Tropical Fish Information

Caridina multidentata
Japonica Shrimp
Behaviour Peaceful, reclusive at first. Effective algae eater considering its size of just a few cm
Max size 4cm
Tank Area All surfaces
Min Tank Size 30cm
Temp Min: 18℃ Max: 27℃
Feeding Scavengers, will usually find enough food in the aquarium but can be supplimented with proprietary foods
Japonica Shrimp
  • Japonica Shrimp - thumbnail
  • Japonica Shrimp - thumbnail

Japonica Shrimp (Caridina multidentata)

Japonica Shrimp Tropical Fish Learn all about the Japonica Shrimp's feeding habits and food types, its behaviour, its origins, its natural habitats, is it male or female, breeding advice and information, suitable tank mates, its sizing and growth range, minimum tank size, water PH and more. Use our fish community creator tool to plan your tank set up and ensure that the Japonica Shrimp is the right fish for your aquarium.

The Japonica or 'Algae' Shrimp is an absolute blessing to the community aquarium due to its brillant ability to remove virtually any algae type. Because of its small size it must be mixed carefully, avoiding any very nippy fish or predatory species. Having said this, most fish of a peaceful nature, even those large enough to eat the shrimps, will simply ignore the shrimps as they go about their business. Once introduced, these shrimps will often dissapear and become reclusive for a while before gaining confidence in their environment. Japonica Shrimps are a naturally grouping and social species so they must be kept in groups. Larger groups tend to be more confident and will venture out together. The species are a very interesting addition to the aquarium and well reccommended. Although these shrimps will adapt to a wide range of conditions, harder water is preferred. Unlike most other Caridina species, the Japonica Shrimp produces larvae rather than fully formed young. Up to 2000 larvae can be produced at one time but these usually perish in home aquariums. The larvae need to be hatched and raised in brackish water and fed microscopic foods. In the wild the larvae are washed into the sea where they develop and head back into freshwater. Reports of successful breeding in general conditions are likely to have been carried out by misidentified shrimps similar in appearance to C. japonica. As with other shrimps, they are very sensitive to strong medications, especially those containing copper.

Japonica/Algae shrimps add virtually no additional load to an aquarium as they are 'recyclers' of waste. You can add these shrimps to your fish list below without using up your stocking level.

Japonica Shrimp Facts

Family Atyidae (Freshwater shrimps) | Synonyms Caridina Japonica | Other names Amano Shrimp, Algae Shrimp, Yamamoto Shrimp, Japanese Shrimp, Japanese Marsh Shrimp | Origin Japan | Breeding Produces larvae, difficult to breed in home aquariums (see main text) | Sexing Females are larger and have a more pronounced spotted/broken line patterning

Japonica Shrimp Help and Advice

If you have a question about keeping Japonica Shrimp's then please use our Japonica Shrimp help forum. Join 100's of other fish enthusiasts with 1000's of years experience between them caring for and keeping fish like these.

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Check tank mates for the Japonica Shrimp fish species

You are in the thinkfish community creator for the Japonica Shrimp fish species, you can learn all about how the tool works in assessing fish tank mate compatibility at the link provided or use the tool tips provided to guide you. Create a test fish community that includes the Japonica Shrimp species and any other types of fish or crustacean you'd like to introduce - You can assess the best companions, tank size suitability, stocking levels based on filter type and volume and possible negative interactions and warnings as you build up your aquarium.

Please do check your water type for compatibility with your fish, which can be found on the Japonica Shrimp information box above and your local water company providers website. Don't waste your money and endanger your fish!
Tank Details
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* Recent changes to stocking & filter advice October 2018
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question mark  Max Stocking level: 0cm
0-1 months 20%: 0cm
1-3 months 40%: 0cm
3-6 months 60%: 0cm
question mark  Current stock level: 0cm
Stock percentage: 0%
question mark  Suggested maximum
fish size for your tank:
My Fishtank Quantity Stock cm

There are currently no fish in your fish tank. To add fish, you can click the 'Add the Japonica Shrimp to your tank' button. Or search for a different fish using the options presented above

sample fish tank
See an example tank as it would show on a user profile with enabled settings and community tanks.

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