Age of fishes is

Options

A. permian
B. devonian
C. triassic
D. miocene

Answer

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the "age of fishes," which can be interpreted as the geological era during which fishes first evolved, rather than their lifespan.

2. **Identifying the Relevant Era**: The evolution of fishes is primarily associated with the Paleozoic Era. This era is known for significant developments in the history of life on Earth.

3. **Focusing on the Specific Period**: Within the Paleozoic Era, there are several periods. The specific period that is crucial for the evolution of fishes is the Devonian Period.

4. **Evolutionary Developments**: During the Devonian Period, fishes began to evolve significant features such as jaws, fins, and gills. This period is often referred to as the "Age of Fishes" due to the diversity and advancement of fish species.

5. **Conclusion**: Therefore, the age of fishes is referred to as the Devonian Period within the Paleozoic Era.

### Final Answer:
The age of fishes is called the Devonian Period in the Paleozoic Era.

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