Theodoliidae

Theodoliidae is a small family of ray-finned fishes belonging to the order Perciformes. The family currently contains only one genus, Theodorus, and two recognized species. These species are found in the western Pacific Ocean, specifically around the reefs of Indonesia and the Philippines. Theodoliidae fishes are characterized by their small size, typically measuring only a few centimeters in length, and their elongated, laterally compressed bodies. They possess a single dorsal fin and a long anal fin. Their coloration is often a dull brown or grey, providing camouflage against their rocky or coral reef habitats. Little is known about their specific diet or reproductive habits, though they are presumed to be carnivorous, feeding on small invertebrates. The genus name, Theodorus, honors a person named Theodorus, though the exact individual is not specified in taxonomic literature. Due to their limited distribution and elusive nature, Theodoliidae are rarely encountered by divers and scientists. Their conservation status has not been formally assessed, but they are not believed to be commercially fished or under significant threat. Further research is needed to fully understand the biology and ecological role of this unique fish family.