The Gulf killifish, Fundulus grandis, is one of the largest members of the genus Fundulus; it is capable of growing up to 18 cm in length, whereas the majority of other Fundulus reach a maximum length of 10 cm. Therefore, F. grandis is among the largest minnows preyed upon by many sport fish, such as flounder, speckled trout, and red snapper. Fundulus derives from the Latin meaning "bottom," and grandis means "large".