软骨鱼

例句：

1. 1.The soft-shelled fish is a popular delicacy in many Asian countries.
   这种软壳鱼是许多亚洲国家流行的美食。
2. 2.The scientist discovered a new species of shark, which is known for its unique skeletal structure.
   这位科学家发现了一种新的鲨鱼物种，以其独特的骨骼结构而闻名。
3. 3.In the ocean, there are many kinds of fish, but only a few can be classified as "soft-shelled."
   在海洋中，有许多种类的鱼，但只有少数几种可以被称为“软壳”的。