NPCs composing that spawngroup :

an_enthralled_molkor (25%)

an_icy_servant (25%)

a_siren_enticer (25%)

a_watery_servant (25%)

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

sirens_5, range=1 (-390,-583,-174)

sirens_6, range=96 (-404,-677,-177)

sirens_19, range=41 (-390,-541,-142)

sirens_88, range=18 (-379,-597,-171)

a_neriad_maiden (50%)
a_swordfish (50%)

a_coldspine_sea_hors_190195, range=16 (-396,-597,-173)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_223866_takp_import_v0, range=16 (-396,-597,-177)

sirens_223860_takp_import_v0, range=17 (-378,-596,-171)

sirens_223855_takp_import_v0, range=95 (-403,-676,-177)