Q- List three peculiar characters of cartilage fishes?
Answer- There are many peculiar characters of cartilage fishes. According to the question two main peculiar characters of cartilage fishes are as follows:
1. The gill slits of cartilage fishes are not covered with operculum.
2. Cartilage fishes have a ventral mouth.
3. The endoskeleton of cartilage fishes is made up of only cartilage.