Fish Otolith Yu Nao Shi 500g Dried Yellow Croaker Ear Stone Traditional TCM Herb

Fish Otolith, known in TCM as Yu Nao Shi (鱼脑石), also called Shi Shou Gu (石首骨) or Yu Zhen Shi (鱼枕石), is the ear stone from large yellow croaker, Larimichthys polyactis. These sun-dried, whitish calcified stones are a traditional Chinese herbal material, traditionally associated with supporting the body's natural balance. Store frozen to maintain quality.

Key Selling Points

• Authentic dried fish otolith from large yellow croaker, a classic TCM material
• Known in Chinese as Yu Nao Shi (鱼脑石), also called Shi Shou Gu or Yu Zhen Shi
• Sun-dried processing preserves the natural hard, stony texture
• Traditionally used in Chinese herbal practice for its cooling nature
• Pre-packaged 500g bulk supply, suitable for herbal shops and home preparation

Quality & Sensory

Typically whitish to pale yellowish, hard and stony with a smooth, dense surface. These otoliths have no pronounced aroma and a neutral, mineral-like character. Quality pieces are intact, dry, and free from discoloration or off-odors.

Technical Specifications

Usage Scenarios

• Traditional herbal decoction preparation
• Ground into powder for external or internal use under practitioner guidance
• Stored as a bulk TCM ingredient for herbal shops
• Used in folk herbal formulas and seasonal wellness preparations

Traditional Uses

In TCM theory, Yu Nao Shi is traditionally associated with clearing heat and supporting the body's natural fluid balance. Folk practice has long used it in decoctions or as a powdered ingredient, often combined with other herbs according to traditional formulas. It is a niche material valued by herbalists and those following classical Chinese wellness traditions.

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