Robinsichthys arrowsmithensis is a species of goby found on the Arrowsmith Bank in the Caribbean Sea at depths of from 92mto596mm (302feetto1,955feetm). This species grows to a length of 2.3cm (00.9inches) SL. This species is the only known member of its genus. The name of this genus honours C. Richard Robins (1928-2020), an American ichthyologist who was an important contributor to the study of gobies of the Americas.[1]