The small zebra fish with vertical stripes in the Pacific Ocean is a freshwater fish, not a marine fish. Small zebrafish is a tropical freshwater fish, which mainly inhabits rivers, lakes and swamps in South America. They live in tropical waters and need stable water temperature and suitable water quality conditions to survive. Therefore, if you want to raise small zebra fish with vertical stripes in the Pacific Ocean, you need to provide them with a fresh water environment to live in.