A fish of muddy waters is

Options

A. Catla
B. Labeo
C. Heteropneustes
D. Diodon

Answer

To determine which fish is commonly found in muddy waters among the options given (Cutla, Labio, Heteropinus, or Diodon), we can analyze each option step by step.

### Step-by-Step Solution:

1. **Understanding the Options**:
- **Cutla**: Also known as Major Carp, it is a freshwater fish found in South Asia.
- **Labio**: Another type of carp, typically found in sluggish streams or rivers.
- **Heteropinus**: A genus of catfish that is native to Asia and is known for its ability to thrive in muddy waters.
- **Diodon**: Commonly referred to as porcupine fish or balloon fish, it is a marine fish and not typically found in freshwater environments.

2. **Analyzing the Habitat**:
- **Cutla**: While it is a freshwater fish, it does not specifically thrive in muddy waters.
- **Labio**: Similar to Cutla, it prefers sluggish streams but is not specifically adapted to muddy conditions.
- **Heteropinus**: This fish is specifically noted for its adaptation to muddy waters, making it a strong candidate.
- **Diodon**: Being a marine fish, it is not found in muddy freshwater environments.

3. **Conclusion**:
- Based on the analysis, **Heteropinus** is the fish that is most commonly associated with muddy waters due to its adaptability to such environments.

### Final Answer:
The fish of muddy waters is **Heteropinus**.