Which type of tail fin is found in cartilage fishes?

Explanation

**Step-by-Step Solution:**

1. **Identify the Type of Fish**: The question specifically asks about cartilaginous fishes, which include species such as sharks and rays.

2. **Understand Tail Fin Types**: There are two main types of tail fins: symmetrical and asymmetrical. Symmetrical tails have equal-sized lobes, while asymmetrical tails have lobes of different sizes.

3. **Define the Tail Fin of Cartilaginous Fishes**: Cartilaginous fishes possess an asymmetrical tail fin. This type of tail fin is known as a heterocercal tail.

...