Amano shrimp (Caridina multidentata, previously known as Caridina japonica) are popular freshwater shrimp in the aquarium hobby, prized for their algae-eating abilities and peaceful nature. Here’s a detailed overview:
Key Features:
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Size: 2–2.5 inches (5–6 cm) when fully grown.
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Lifespan: 2–3 years (sometimes up to 5 years in optimal conditions).
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Color: Transparent with light brown or gray markings, often with dotted lines along the body.
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Behavior: Peaceful, active, and social; best kept in groups.
Habitat & Tank Requirements:
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Tank Size: Minimum 10 gallons (larger for groups).
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Water Parameters:
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Temperature: 70–80°F (21–27°C).
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pH: 6.5–7.5.
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Hardness: Prefers slightly soft to moderately hard water.
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Substrate & Decor: Fine gravel or sand, with plants, driftwood, and hiding spots.
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Filtration: Gentle flow (sponge filters work well).
Diet:
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Primarily algae eaters (hair algae, biofilm, etc.).
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Supplement with algae wafers, blanched veggies (zucchini, spinach), and high-quality shrimp pellets.
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Avoid copper-based foods (toxic to shrimp).
Tank Mates:
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Compatible: Small peaceful fish (e.g., neon tetras, otocinclus), snails, and other dwarf shrimp (e.g., cherry shrimp).
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Avoid: Large or aggressive fish (e.g., cichlids, bettas may prey on them).
Breeding:
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Difficulty: Challenging in freshwater; larvae require brackish water to survive.
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Process: Females carry eggs (20–30) for ~5 weeks before releasing larvae. Raising young requires transferring larvae to brackish conditions (salinity ~1.010–1.015 SG).
Common Health Issues:
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Molting Problems: Caused by poor diet or incorrect water parameters (ensure adequate calcium).
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Copper Toxicity: Deadly even in small amounts (check medications/food ingredients).
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Parasites/Fungi: Quarantine new shrimp to prevent outbreaks.
Why Keep Them?
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Excellent algae controllers.
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Low bioload and easy to care for (once acclimated).
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Fascinating to observe as they forage and interact.
Would you like tips on acclimating them or troubleshooting common issues?
