Minyichthys brachyrhinus is a species of marine fish belonging to the family Syngnathidae.
They can be found in the coastal waters of Indonesia, Sumatra, the Philippines, Fiji, and Hawaii, though little is known about their preferred habitat in these areas.
Their diet likely consists of small crustaceans such as copepods, amphipods, and mysid shrimps.
Reproduction occurs through ovoviviparity in which the males brood eggs before giving live birth.