This unknown Rostanga is known from five specimens found in Halimeda patches on Kwajalein's eastern lagoon reef at depths of 9-10m and ranging in size from 8 to 19mm and two larger ones from Rongelap Atoll at 20 and 26mm. The first one figured below measured 15mm in length. The top photo was taken in the field using a Nikon DS80. The second one was shot with a Dino-Lite digital microscope using LED lighting. This species may also include the one figured under Rostanga sp. e403. One of these photos is printed in Gosliner et al (2018) as Rostanga sp. 2.
These two specimens were found in a lagoon Halimeda patch at a depth of about 8m on the night of 30 August 2008.
The specimen below was found on 25 May 2009 at a depth of about 8m in a Halimeda patch on a Kwajalein Atoll lagoon reef. It laid the orange egg mass in captivity.
The one below was found and photographed by Jay Lord at night in an algae patch in Kwajalein lagoon. It looks very much like a darker specimen is partially seen at the left side of the photo.
The photos below show two specimens that may be the same species from Rongelap Atoll by John and Lynette Flynn. These were in less than a meter of water on the lagoon side of the reef and measured 26 and 20mm.
With an egg mass.
Created 26 November 2007
Updated 12 October 2020