Grammatidae is a small family of ray-finned fishes which were formerly placed in the order Perciformes but are now regarded as being incertae sedis in the subseries Ovalentaria in the clade Percomorpha. They are commonly known 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:

Grammatidae. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Grammatidae.

The royal gramma (Gramma loreto), also known as the fairy basslet, is a species of fish in the family Grammatidae native to reef environments of the tropical western Atlantic Ocean. They are commonly kept in aquariums.

Gramma royal. Retrieved May, 08 2021, from en.wikipedia.org/wiki/Royal_gramma.