NPCs composing that spawngroup :

an_enthralled_bulthar (50%)

an_enthralled_ulthork (50%)

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

sirens_1, range=36 (83,-60,-146)

sirens_19, range=12 (46,-47,5)

sirens_23, range=1 (47,-60,5)

sirens_24, range=83 (74,20,3)

sirens_25, range=96 (77,33,3)

an_enthralled_molkor (100%)

sirens_27, range=58 (102,-40,-135)

sirens_35, range=26 (33,-81,-135)

sirens_36, range=35 (34,-26,-135)

sirens_37, range=73 (24,11,-135)

sirens_38, range=72 (28,-129,-135)

a_siren_beguiler (100%)

sirens_47, range=83 (19,20,-20)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_57, range=86 (128,-88,-149)

a_neriad_mistress (100%)

sirens_71, range=74 (119,-78,-153)

a_neriad_mistress (50%)
a_neriad_mistress (50%)

sirens_73, range=23 (65,-44,-148)

sirens_74, range=74 (-27,-54,-157)

a_neriad_mistress (100%)
a_neriad_mistress (100%)

sirens_109, range=68 (115,-52,-100)

sirens_110, range=69 (115,-67,-100)

sirens_115, range=89 (136,-52,-64)

sirens_118, range=93 (132,-97,3)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

sirens_119, range=56 (102,-71,-135)

sirens_122, range=90 (87,-140,-54)

sirens_125, range=86 (44,27,-54)

sirens_126, range=48 (36,-106,-80)

a_siren_templar (50%)
a_siren_templar (50%)

sirens_127, range=95 (45,36,-80)

a_servant_sea_elepha_190188, range=24 (71,-61,-148)

a_coldspine_sea_hors_190201, range=32 (75,-42,-149)

a_coldspine_seahorse (50%)
a_swordfish (50%)

a_servant_swordfish_190209, range=79 (53,20,-16)

a_swordfish (100%)

a_servant_swordfish_190210, range=44 (54,-15,-19)

a_swordfish (100%)

sirens_an_enthralled_bulthar6_takp_import_v0, range=65 (-16,-40,3)

an_enthralled_bulthar (100%)

sirens_223842_takp_import_v0, range=13 (46,-46,5)

sirens_a_servant_swordfish9_takp_import_v0, range=94 (-19,8,-13)

sirens_223869_takp_import_v0, range=25 (33,-80,-135)

sirens_223857_takp_import_v0, range=24 (71,-61,-152)

a_servant_manatee (50%)
a_servant_walrus (50%)

sirens_223851_takp_import_v0, range=37 (84,-59,-149)

sirens_223844_takp_import_v0, range=32 (75,-42,-150)

sirens_a_siren_seductress22_takp_import_v0, range=47 (36,-105,-80)

a_siren_seductress (100%)

sirens_a_siren_enticer8_takp_import_v0, range=36 (34,-25,-135)