加吉 has two main lives. (1) As
加吉鱼 (jiājíyú) it's the prized red porgy / red sea bream — a specialty of Shandong coastal cuisine, called the 'fish of celebration' because its red color suits banquets and weddings. (2) As a name transliteration,
加 ("add") +
吉 ("auspicious") gives a positive-sounding rendering for foreign "Ga-ji / Gad-get" syllables.