NPCs composing that spawngroup :

an_icy_servant (50%)

a_servant_swordfish (50%)

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

sirens_13, range=124 (-817,-232,-72)

sirens_48, range=191 (-711,-266,-26)

sirens_61, range=162 (-766,-261,-42)

sirens_62, range=167 (-749,-260,-42)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_64, range=131 (-694,-147,-149)

sirens_67, range=106 (-827,-214,-72)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_78, range=137 (-879,-233,-152)

sirens_83, range=71 (-749,-112,-177)

sirens_86, range=1 (-821,-109,-177)

sirens_87, range=90 (-748,-162,-179)

sirens_91, range=178 (-871,-279,-178)

sirens_93, range=62 (-799,-167,-153)

#Ulth_the_Enraged (20%)
an_enthralled_bulthar (80%)

sirens_94, range=105 (-722,-69,-177)

sirens_117, range=60 (-832,-167,-153)

sirens_118, range=111 (-724,-165,-153)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

a_coldspine_sea_hors_190190, range=90 (-889,-166,-175)

a_coldspine_seahorse (50%)
a_swordfish (50%)

a_coldspine_sea_hors_190191, range=65 (-849,-167,-168)

a_coldspine_seahorse (100%)

an_icy_servant_190204, range=82 (-888,-155,-172)

a_swordfish (100%)

sirens_223847_takp_import_v0, range=167 (-748,-259,-42)

sirens_an_enthralled_bulthar6_takp_import_v0, range=59 (-830,-167,-153)

an_enthralled_bulthar (100%)

sirens_223833_takp_import_v0, range=90 (-747,-161,-179)

sirens_223838_takp_import_v0, range=72 (-748,-111,-178)

an_enthralled_molkor (50%)
a_watery_servant (50%)

sirens_223867_takp_import_v0, range=177 (-870,-278,-178)

sirens_223852_takp_import_v0, range=82 (-888,-155,-172)

sirens_223841_takp_import_v0, range=65 (-849,-167,-178)

an_enthralled_molkor (50%)
a_neriad_mistress (50%)

sirens_223836_takp_import_v0, range=90 (-889,-166,-179)

sirens_223868_takp_import_v0, range=106 (-721,-68,-178)

sirens_an_enthralled_molkor13_takp_import_v0, range=197 (-703,-267,-27)

an_enthralled_molkor (100%)

sirens_223843_takp_import_v0, range=132 (-693,-146,-149)

an_enthralled_molkor (50%)
an_enthralled_ulthork (50%)

sirens_an_enthralled_ulthork16_takp_import_v0, range=112 (-723,-164,-153)

an_enthralled_ulthork (100%)

sirens_223837_takp_import_v0, range=146 (-685,-166,-153)

#Ulth_the_Enraged (20%)
an_enthralled_bulthar (80%)