What kind of fish does captain use?

This question is a bit ambiguous! It needs more context to answer properly.

Here are some possibilities:

* "Captain" referring to a specific person: If you're thinking of a particular captain, like a fisherman or a chef, we'd need to know more about them to know what kind of fish they use.

* "Captain" referring to a product or brand: If you're asking about a fishing lure or bait called "Captain," we'd need more information to tell you what kind of fish it's meant to catch.

* "Captain" as a slang term: If "Captain" is used in a slang sense, we'd need more context to understand the question. For example, "What kind of fish does Captain use" might be a way of asking "What kind of drugs does this person use?"

Please provide more details about the context so I can give you a more helpful answer!