The Geometric Pygmy Perchlet also known as the Hi Fin Perchlet is a rare find from the rubble zones of Cebu. They are within the Anthiinae subfamily along with many species of Anthias. However, the Geometric Pygmy Perchlets within the genus Plectranthias resemble hawkfishes more than Anthias. Their bodies are elongated with a high third dorsal spine followed by a banner-like flap. They are mottled in orange and white, and have very interesting green eyes. They feed upon zooplankton, and are a wonderful addition to a reef aquarium.

The Geometric Pygmy Perchlet is a reef inhabitant in the wild, occurring within the rubble zones and often found among plate corals (Fungia sp.). They require a saltwater aquarium of at least 30 gallons with plenty of live rock for hiding and feeding. They may become aggressive towards other bottom dwelling fish like gobies and blennies.

The Geometric Pygmy Perchlet's natural diet includes zooplankton, and they should be offered a variety of meaty foods including; vitamin enriched brine shrimp, mysis shrimp and small pieces of shrimp and fish.