Anthrax is a disease that affects cattle, while fin rot affects ________.

Options

A. fish
B. dog
C. cat
D. fungus

Answer

To solve the question "Anthrax is a disease that affects cattle, while fin rot affects ________," we can follow these steps:

### Step-by-Step Solution:

1. **Identify the First Part of the Question**: We know that Anthrax is a disease that primarily affects cattle. This sets the context for the type of organisms we are discussing.

2. **Understand the Second Part of the Question**: The second part mentions "fin rot." We need to determine which type of organism is affected by fin rot.

3. **Analyze the Options**: The options provided are:
- Option 1: Fish
- Option 2: Dog
- Option 3: Cat
- Option 4: Fungus

4. **Focus on the Term "Fin"**: The term "fin" is crucial here. Fins are anatomical features found in aquatic animals, specifically fish. This suggests that fin rot is likely a disease that affects fish.

5. **Consider the Nature of Fin Rot**: Fin rot is an infectious disease that can be caused by bacteria or fungi. However, it primarily affects fish, as they have fins that can become infected.

6. **Eliminate Incorrect Options**:
- Dogs and cats do not have fins, so they cannot be affected by fin rot.
- While fungus is involved in the disease process, it is not an organism that is affected by fin rot.

7. **Conclude the Answer**: Based on the analysis, the correct answer to fill in the blank is "Fish."

### Final Answer:
Fin rot affects **Fish**.