This is the 7758th most frequent Chinese word.
钓鱼
Fishing.
In this sentence, '钓鱼' is used in its literal meaning of fishing for fish as an activity or hobby.
我和爸爸喜欢周末去河边钓鱼。
My dad and I like going fishing by the river on weekends.
Here, '钓鱼' metaphorically refers to phishing, which involves deceitfully attempting to obtain sensitive information via electronic means.
那封邮件看起来像是一个钓鱼骗局,请不要相信。
That email looks like a phishing scam; please don't trust it.
In this example, '钓鱼' is metaphorically applied to describe seeking or attracting attention from others.