NPCs composing that spawngroup :

an_enthralled_ulthork (33%)

a_neriad_maiden (33%)

a_watery_servant (34%)

NPCs spawning around that spawngroup :
(Max range : 100)

sirens_16, range=92 (-888,-508,-176)

sirens_78, range=27 (-891,-422,-179)

sirens_89, range=97 (-855,-516,-180)

a_swordfish (50%)
a_swordfish (50%)

sirens_90, range=1 (-865,-420,-181)

sirens_107, range=32 (-874,-388,-154)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_an_enthralled_bulthar6_takp_import_v0, range=41 (-873,-378,-154)

an_enthralled_bulthar (100%)

sirens_223856_takp_import_v0, range=90 (-887,-507,-176)

sirens_223863_takp_import_v0, range=26 (-890,-421,-179)