鱼杞

'鱼杞' (Yú qǐ) could have different connotations depending on context, possibly combining fish ('鱼' - yú) and a less common word '杞' (qǐ). '杞' is sometimes used as short for '杞柳', which refers to an aquatic plant that looks like driftwood when dried, similar to how fishes often rely on water for living. However, '杞' might also allude to '杞人忧天' (a traditional idiom about excessive anxiety), implying a unique personality or someone being worry-free like a fish in water. The user likely means to convey tranquility and simplicity through their choice of characters.