Here are a few options for a description for the WordPress post_tag “水族箱” (Aquarium) in Traditional Chinese, ranging in formality and focus:

**Option 1: Concise & General**

* **Description:** 關於水族箱的一切，包括飼養、設計、維護等。

* **Translation:** Everything about aquariums, including breeding, design, and maintenance.
* **Suitable for:** General use, wide appeal.

**Option 2: Slightly More Detailed**

* **Description:** 深入探索水族箱世界，涵蓋水族箱相關的生物、器材、造景，以及提供實用的飼養知識、技巧與經驗分享。

* **Translation:** Delve into the world of aquariums, covering aquarium life, equipment, landscaping, and providing practical breeding knowledge, techniques, and experience sharing.
* **Suitable for:** Focused on providing content; good for a blog or website dedicated to aquariums.

**Option 3: Focus on Education & Enjoyment**

* **Description:** 熱愛水族箱嗎？這裡有豐富的水族箱知識，從基礎入門到進階技巧，讓您輕鬆打造美麗、健康的水族世界，享受觀賞魚的樂趣。

* **Translation:** Passionate about aquariums? Here’s a wealth of aquarium knowledge, from basic introductions to advanced techniques, to help you easily create a beautiful and healthy aquatic world, and enjoy the pleasure of watching fish.
* **Suitable for:** Aimed at beginners or those seeking hobby tips; emphasizes enjoyment.

**Option 4: Technical/Professional**

* **Description:** 收錄關於水族箱設計、設備、生物及相關科研論文、技術文章及產業動態。

* **Translation:** Includes information on aquarium design, equipment, organisms, and related scientific papers, technical articles, and industry insights.
* **Suitable for:** A more technical or professional audience. This is the least common type of description for a tag.

**How to Choose:**

* **Consider your target audience.** Who are you writing for? Beginners, hobbyists, or professionals?
* **Think about the content of the posts.** What will you be writing about in posts tagged with “水族箱”?
* **Keep it concise.** WordPress descriptions are often displayed alongside the tag name, so short and informative is usually best.
* **Use keywords.** If you’re trying to attract search traffic, think about the terms people might use to find your content (e.g., “Aquarium care,” “aquarium plants,” “fish breeding”). However, in this instance, you’re limited to information about aquariums so the options may be more general.

I recommend **Option 2** as a good balance of information and approachability for most general aquariums. Adjust it to fit your specific blog or site. You can enter this description directly into the WordPress tag edit screen.