[2] In 2009 a second monospecific genus, Dibrachichthys, was added to the family when it was described by Theodore Wells Pietsch III, Jeffery W. Johnson and Rachel J.

[4] This family is regarded, with its sister taxon the Antennariidae, as the most derived clade within the suborder Antennarioidei.

[3] Four-armed frogfishes are small fishes, the largest species is Tetrabrachium ocellatum which has a maximum published standard length of 7 cm (2.8 in).

[7] Tetrabrachiidae frogfishes are found in the western Pacific and eastern Indian Oceans around northern Australia, New Guinea and Indonesia.

[4] These fishes occur in areas of soft substrate in inshore waters and the continental shelf.