Invertebrates are animals that lack a vertebral column, or backbone, and fish are backboned aquatic animals. Given these facts, fish are aquatic animals that do not lack a what among the following options:
- the body's largest organ
 - furry hide
 - vertebral column
 - critical organs
 - thumbs
 - aqua lungs
 - salt and water.
 - Chlorophyll


 

   vertebral column      