Hallaxa fuscescens is rare in the Marshalls, so far known from only three specimens found at Enewetak Atoll and two more at Kwajalein. All three at Enewetak, which ranged in length from 9 to 12mm, were under dead coral rocks on the lagoon reef of Enewetak Island at a depth of about 5 meters. The Kwajalein specimens came from a Halimeda patch on the lagoon slope at 9m. Hallaxa fuscencens was first reported in the Marshalls from Enewetak Atoll as Hallaxa atrotuberculata by Gosliner & Johnson (1994).
The specimen below was found in a Kwajalein lagoon Halimeda algae patch on 23 February 2014.
Created 15 December 2006
Updated 13 April 2014