Description

Amano Shrimp

Caridina multidentata

Species Background

Amano Shrimp are native to freshwater streams and rivers of Japan and Taiwan, with a life cycle that includes a brackish larval stage. They are a true wild species in the aquarium trade and are best known for their role in controlling algae rather than ornamental coloration.

Behavior and Temperament

Peaceful, active, and constantly grazing. Amano Shrimp coexist well with other non-aggressive fish and invertebrates. They are social and perform best when kept in small groups.

Adult Size

Adults typically reach 1.75–2 inches.

Water Parameters

Temperature: 68–78°F
pH: 6.0–7.8
GH: 3–12 dGH
KH: 2–8 dKH

Diet

Omnivorous grazer. Feeds on biofilm and algae, but should be supplemented with sinking shrimp foods, algae wafers, and blanched vegetables to maintain body mass.

Tank Requirements

Minimum tank size: 10 gallons for a small group.
Well-oxygenated water with stable parameters is preferred. Planted tanks with hardscape provide grazing surfaces and shelter.

Why They’re Popular

Amano Shrimp are valued for their effectiveness at algae control, larger size compared to dwarf shrimp, and compatibility with peaceful community aquariums.