Which of the following is a correct match?

Options

A. Lamprey - Chondrichthyes
B. Saw fish - Cyclostomata
C. Sea horse - Osteichthyes
D. Hagfish - Osteichthyes

Explanation

To solve the question "Which of the following is a correct match?", we need to analyze the options provided and determine if the examples given correctly correspond to their respective classes. Here’s a step-by-step breakdown of the solution:

### Step 1: Identify the Classes of Fishes
We start by recognizing the three main classes of fishes mentioned:
- **Austichthys**: This class includes bony fishes.
- **Chondrichthys**: This class includes cartilaginous fishes.
- **Cyclostomata**: This class includes jawless fishes like lampreys and hagfish.

### Step 2: Analyze Each Option
Now, we will evaluate each option provided in the question:

1. **Option 1: Lamprey belongs to Chondrichthys**
- **Analysis**: Lampreys are jawless fishes that belong to the class Cyclostomata, not Chondrichthys (which includes cartilaginous fishes).
- **Conclusion**: This option is incorrect.

2. **Option 2: Sawfish belongs to Cyclostomata**
- **Analysis**: Sawfish, also known as Pristis, are cartilaginous fishes and belong to Chondrichthys, not Cyclostomata.
- **Conclusion**: This option is also incorrect.

3. **Option 3: Seahorse belongs to Austichthys**
- **Analysis**: Seahorses are indeed bony fishes and belong to the class Austichthys.
- **Conclusion**: This option is correct.

4. **Option 4: Hagfish belongs to Austichthys**
- **Analysis**: Hagfish are jawless fishes that belong to Cyclostomata, not Austichthys.
- **Conclusion**: This option is incorrect.

### Step 3: Determine the Correct Match
From our analysis, we find that the only correct match is:
- **Seahorse (Hippocampus) belongs to Austichthys.**

### Final Answer
The correct match is **Option 3: Seahorse belongs to Austichthys.**

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