Silver fish is a true fish.

Answer

**Step-by-Step Solution:**

1. **Understanding the Statement**: The question states, "Silver fish is a true fish." We need to determine if this statement is true or false.

2. **Identifying Silverfish**: Silverfish, scientifically known as *Lepisma*, is commonly mistaken for a fish due to its name and appearance. However, it is important to clarify its classification.

3. **Classification of Silverfish**: Silverfish belongs to the phylum **Arthropoda**, which includes insects, arachnids, and crustaceans. Specifically, silverfish are classified under the class **Insecta**.

4. **Characteristics of Arthropods**:
- Arthropods have jointed appendages (legs).
- They possess an open blood vascular system, meaning their blood is not contained within vessels but flows in cavities.
- Their bodies are segmented into three parts: head, thorax, and abdomen.
- They have an exoskeleton made of chitin.

5. **Characteristics of Insects**:
- Insects, including silverfish, are hexapods, meaning they have six legs (three pairs).
- They excrete uric acid.
- Their bodies are also divided into head, thorax, and abdomen.
- Silverfish are wingless, unlike many other insects.

6. **Conclusion**: Since silverfish is classified as an insect and not a fish, the statement "Silver fish is a true fish" is **false**.

7. **Final Clarification**: Silverfish is often called so due to its shiny, metallic appearance and fish-like shape, but it is indeed an insect and a household pest that feeds on starches and carbohydrates.

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