Percis schauinslandii Steindachner, 1900 Parapercis schauinslandii, commonly known as redspotted sandperch, lyretail grubfish or flagfin weever, is a species of marine ray-finned fish native to the Indian and Pacific Oceans.

It has a spiny dorsal fin which is black near its base and is a deep reddish cour towards the tip.

[2] This species occurs in open areas with sandy and rubble substrates on the deeper seaward and coastal slopes and on deep sandy reef flats,[3] at depths between 9 metres (30 ft) and 170 metres (560 ft).

[5] They are distributed throughout the Indo-Pacific from the coast of East Africa to Pitcairn Island, as far north as Japan and as far south as the Great Barrier Reef.

[2] The specific name honours the German zoologist and director of the Ubersee-Museum, Bremen, Hugo Schauinsland (1857–1937) who collected in New Zealand in 1896–1897.