black marlin
A large game fish (Makaira indica) found in tropical and subtropical waters. In Japanese, it is a specific type of marlin, distinct from other billfish.
シロカジキはカジキマグロの一種で、最高級の食材として扱われる。
The black marlin is a type of marlin and is treated as a top-quality ingredient.
沖縄の海ではシロカジキがよく釣れる。
Black marlin are often caught in the seas around Okinawa.
マカジキ is the striped marlin (Kajikia audax), another common marlin species in Japan. シロカジキ is a different species, the black marlin.
Usually written in katakana, as is common for fish names. It is usually written in kana.
Kanji form is rare and may not be widely recognized. The reading しろかじき is not obvious from the kanji.
Compound of 白 (しろ, 'white') + 舵木 (かじき, 'marlin'). The name likely refers to the lighter coloration of the fish compared to other marlin species. The exact origin of the name is uncertain.