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This species is most likely as Goniodoridella sp. 7 in IPN at page 128, though it seems to lack the median black patch in front of the rhinophores.
Pretty similiar is:
Goniodoridella sp. 01 which differs by the black line running down from the 'crescent' at the sides in a posterior slant.
Gosliner, Terrence M., David W. Behrens & Ángel Valdés. 2008. Indo-Pacific Nudibranchs and Sea Slugs.
Sea Challengers Natural History Books. Gig Harbor, Washington. 426pp.,
How to cite:
Köhler, E. (2017), published 23 May 2017, Goniodoridella sp. 05 Genus: Pruvot-Fol, 1933
available from https://www.Philippine-Sea-Slugs.com/Nudibranchia/Euctenidiacea/Goniodoridella_sp_05.htm