They are bright orange and transparent yellow in life, with a white stripe running down from between the eyes to the upper lip and a dark brown spot at the base of the tail fin.

[5][6] In life, the body is transparent yellow with bright orange abdominal cavity lining and iridescent blue and green highlights on the fins.

There is usually a thin white stripe (dark in preserved specimens) on the snout, running from the upper lip to the area between the eyes.

They have been recorded in Australia (including the Great Barrier Reef), Fiji, Indonesia, New Caledonia, Palau, Papua New Guinea, the Philippines, the Solomon Islands, and Vanuatu.

[6] Nasal dwarfgobies generally congregate in large, loose schools near coral reef drop-offs pockmarked by caves or recesses.

They usually orient themselves vertically with their heads facing upwards along the coral reef wall and presumably feed on zooplankton traveling down the water column.

[7] Of this, around 34 days are spent as pelagic larvae which is 39% of the total lifespan (in contrast to less than 1% for the vast majority of other reef fish species).

However, like other dwarfgobies in the genera Trimma and Eviota, they may occupy a valuable trophic role in the reef ecosystems due to their short lifespans and thus higher biomass generation rates.