NPCs composing that spawngroup :

an_enthralled_molkor (20%)

a_coldspine_sea_horse (20%)

a_neriad_mistress (20%)

a_siren_enticer (20%)

a_watery_servant (20%)

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

sirens_3, range=116 (-773,-617,-155)

a_coldspine_seahorse (50%)
a_neriad_maiden (50%)

sirens_4, range=181 (-713,-646,-155)

sirens_15, range=25 (-865,-604,-175)

sirens_16, range=82 (-888,-508,-176)

sirens_41, range=167 (-808,-738,-181)

sirens_60, range=187 (-713,-662,-47)

sirens_78, range=1 (-887,-591,-179)

sirens_85, range=158 (-728,-597,-78)

a_siren_enchantress (50%)
a_siren_enticer (50%)

sirens_89, range=80 (-855,-516,-180)

a_swordfish (50%)
a_swordfish (50%)

sirens_90, range=171 (-865,-420,-181)

sirens_223866_takp_import_v0, range=166 (-807,-737,-181)

sirens_223839_takp_import_v0, range=25 (-864,-603,-175)

an_enthralled_molkor (50%)
a_servant_swordfish (50%)

sirens_223856_takp_import_v0, range=83 (-887,-507,-176)

sirens_223863_takp_import_v0, range=169 (-890,-421,-179)

sirens_223845_takp_import_v0, range=172 (-864,-419,-182)

sirens_a_siren_priestess94_takp_import_v0, range=187 (-712,-661,-47)

a_siren_priestess (100%)