Study the given list of animals :
Aurelia, Lepisma, Petromyzon, Hippoxcampus , Asterias , String ray
How many true fish in given list ?

Options

A. 4
B. 6
C. 2
D. 3

Answer

To determine how many true fish are in the given list of animals, we need to analyze each animal and classify them accordingly.

1. **Aurelia**:
- Classification: Aurelia is a jellyfish belonging to the phylum Cnidaria.
- Conclusion: Not a true fish.

2. **Lepisma**:
- Classification: Lepisma, commonly known as silverfish, belongs to the order Zygentoma in the phylum Arthropoda.
- Conclusion: Not a true fish.

3. **Petromyzon**:
- Classification: Petromyzon is a lamprey, which belongs to the class Cyclostomata within the phylum Chordata.
- Conclusion: While it is a vertebrate and has some fish-like characteristics, it is not considered a true fish.

4. **Hippocampus**:
- Classification: Hippocampus, commonly known as seahorse, belongs to the class Osteichthyes (bony fish).
- Conclusion: This is a true fish.

5. **Asterias**:
- Classification: Asterias is a starfish, which belongs to the phylum Echinodermata.
- Conclusion: Not a true fish.

6. **Stingray**:
- Classification: Stingray belongs to the class Chondrichthyes, which includes cartilaginous fish.
- Conclusion: This is also considered a true fish.

Now, summarizing the findings:
- True fish identified: Hippocampus and Stingray.
- Total count of true fish: 2.

**Final Answer**: There are 2 true fish in the given list.

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