Grammatidae is a small family of fishes in the order Perciformes known commonly as basslets. They are marine fish found in the tropical western Atlantic Ocean. They are characterized in part by a broken or absent lateral line. The largest species reach around 10 centimeters in maximum length. Some basslets are colorful and are kept in marine aquaria. There are two genera: \n* Gramma \n* Lipogramma A number of other species may be called "basslets", in particular members of Serranidae, where they may be called "fairy basslets".