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Caridina multidentata
A translucent freshwater shrimp famed as the top algae-eater and an indispensable cleanup animal for planted aquariums. Hardy and long-lasting, it rarely breeds in pure freshwater.
The Amano shrimp (Caridina multidentata) is a freshwater shrimp of East Asian rivers, celebrated in the aquarium hobby as the finest algae-eater available. It owes its English name to the legendary aquascaper Takashi Amano, who popularized it as a cleanup crew for planted tanks. At 3-5 cm it is relatively large for an ornamental shrimp, with a translucent grey-green body marked by rows of reddish-brown dots. It devours filamentous algae and leftover food without harming plants, making it ideal for aquascapes. Hardy across 18-28°C, it is nonetheless very sensitive to copper and fish medications. Because its larvae are amphidromous and develop only in brackish water, it essentially does not multiply in a normal freshwater tank, a plus for those who do not want a population explosion. It lives a comparatively long 2-3 years, but is sensitive to high temperatures and low oxygen, so summer cooling and good aeration matter.
Source: Wikipedia (CC BY-SA 4.0)
Origin
Streams of East Asia including Japan, Taiwan, and the Korean Peninsula
Lifespan
2-3 years
Size
3-5cm
Temperature
18〜28℃
Humidity
—(水中飼育)
Algae, shrimp food, leftover food
Edited & verified by: br-choku editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Primary sources
Accepted name: Caridina multidentata Stimpson, 1860
Authority databases: Wikipedia
Nomenclature follows global taxonomic authority databases.
無脊椎(淡水エビ)。Caridina multidentata は CITES 非該当・特定外来生物にも非該当。日本在来種を含むため、飼育個体の野外放流は遺伝的撹乱の観点から避ける。
Sources: CITES Appendices (Checklist)
Regulations may change. Always verify the latest information with the relevant authorities.
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30cm+; thrives where there is algae to eat
Slightly acidic to neutral; sensitive to copper and meds
Voraciously eats filamentous algae and leftovers
Larvae need brackish water; rarely multiplies in freshwater
Watch for heat and low oxygen; can climb out, so use a lid
Beginner. This is a beginner-friendly species. No special equipment or experience is required, and it can be kept successfully with basic care setup.
The ideal temperature for Amano Shrimp is 18〜28℃. Recommended humidity is —(水中飼育). Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Amano Shrimp is 2-3 years. With proper care and nutrition, they can live a long and healthy life.
Amano Shrimp typically reaches 3-5cm as an adult. Size may vary depending on care conditions and individual genetics.
Amano Shrimp feeds on: Algae, shrimp food, leftover food. Aim for a balanced diet with appropriate feeding frequency.
The price of Amano Shrimp varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: June 25, 2026