Here’s a possible description for the WordPress post tag “淡水魚” (Dànshuǐ yú – Freshwater Fish) in Traditional Chinese, aiming for clarity and conciseness:

**Description:**

包含所有關於淡水魚類的相關文章。涵蓋河流、湖泊、池塘等淡水環境中的魚類，包括牠們的種類、生態、飼養方法、以及相關的知識等。

**(Simplified Translation)**

**(Includes all articles related to freshwater fish. Covers fish found in freshwater environments like rivers, lakes, and ponds, including their types, ecology, breeding methods, and related knowledge.)**

**Explanation of the choices and why they work:**

* **簡潔清晰 (Concise and Clear):** The description gets straight to the point.
* **涵蓋範圍廣 (Broad Scope):** Touches on key aspects of freshwater fish without being overly specific.
* **常用詞彙 (Common Vocabulary):** Uses common, everyday Chinese words.
* **針對性 (Targeted):** Specifically mentions the topic of “淡水魚” and its various interpretations.
* **Keywords for search:** The description incorporates words like “魚類 (fish)”, “河流 (rivers)”, “湖泊 (lakes)” and “生態 (ecology)”. All these words will help with Search Engine Optimization (SEO) for the tag meaning in searches.

This description provides a good overview of what readers can expect to find when browsing articles tagged with “淡水魚.” You can adjust the specifics to better reflect the content you typically post, but this provides a solid foundation.