Pasadena police say it's a civil matter and no charges will be filed. The seven goldfish were purchased together by the couple during happier times.
Police spokesman Vance Mitchell says the man reported on Saturday that the woman took the goldfish from his apartment.
Mitchell says the two argued earlier about some jewelry the man had given her but took back. She wanted the jewelry returned.
Officers who were dispatched to the woman's home arrived to find four fried goldfish on a plate. The woman said she already ate the other three.