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尖紫蛤分布于我国东南沿海,在广东鉴江它的栖息密度为3.5～7.0个/m~2。生活在比重1.0006～1.0007,水温19.2～30.8℃,pH 值6.9～7.2.流速0.243～0.704m/s,透明度为0.38～0.60m 的咸淡水交汇处,从低潮区至水深3m 的沙滩均有分布,栖息深度一般为0.30～0.50m,最深可达0.70m。食料以底栖硅藻和有机碎屑为主。雌雄异体,繁殖期在9～10月,一周龄个体平均大小为37.5mm×16.5mm×8.2mm。在鉴江尖紫蛤的年产量约5万kg。
Stellaria clam distributes in the southeast coast of China. Its habitat density is 3.5-7.0 plants / m ~ 2 in Jianjiang of Guangdong Province. Living in the proportion of 1.0006 ~ 1.0007, water temperature 19.2 ~ 30.8 ℃, pH value of 6.9 ~ 7.2. The flow rate of 0.243 ~ 0.704m / s, the transparency of 0.38 ~ 0.60m of fresh and brackish water confluence, , The habitat depth is generally 0.30 ~ 0.50m, the deepest up to 0.70m. Food to benthic diatoms and organic debris-based. Dioecious, the breeding season in September to October, one week-old individuals average size of 37.5mm × 16.5mm × 8.2mm. In Jianjiang purple clams annual production of about 50,000 kg.