NPCs composing that spawngroup :

an_enthralled_bulthar (17%)

an_icy_servant (16%)

a_coldspine_sea_horse (17%)

a_neriad_maiden (17%)

a_neriad_mistress (16%)

a_servant_swordfish (17%)

NPCs spawning around that spawngroup :
(Max range : 200)

sirens_2, range=189 (-365,-407,-174)

sirens_4, range=199 (-499,-438,-210)

sirens_5, range=17 (-390,-583,-174)

sirens_6, range=194 (-566,-647,-152)

sirens_19, range=56 (-390,-541,-142)

sirens_63, range=150 (-402,-447,-116)

sirens_75, range=124 (-501,-613,-155)

a_neriad_maiden (50%)
a_neriad_maiden (50%)

sirens_82, range=172 (-550,-613,-72)

sirens_85, range=199 (-566,-662,-47)

a_siren_enchantress (50%)
a_siren_enticer (50%)

sirens_88, range=1 (-379,-597,-171)

a_neriad_maiden (50%)
a_swordfish (50%)

sirens_118, range=130 (-406,-469,-117)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

a_coldspine_sea_hors_190195, range=18 (-396,-597,-173)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_223847_takp_import_v0, range=130 (-405,-468,-117)

sirens_223877_takp_import_v0, range=17 (-389,-582,-175)

sirens_223866_takp_import_v0, range=18 (-396,-597,-177)

sirens_223855_takp_import_v0, range=83 (-403,-676,-177)

sirens_223861_takp_import_v0, range=199 (-498,-437,-210)

a_coldspine_sea_horse (50%)
a_servant_swordfish (50%)

sirens_223869_takp_import_v0, range=190 (-364,-406,-175)

a_siren_enticer (50%)
a_siren_seductress (50%)

sirens_a_siren_priestess94_takp_import_v0, range=197 (-565,-661,-47)

a_siren_priestess (100%)