NPCs composing that spawngroup :

an_enthralled_bulthar (33%)

an_enthralled_molkor (34%)

an_enthralled_ulthork (33%)

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

sirens_1, range=167 (-335,-303,-174)

sirens_12, range=179 (-511,-52,-114)

sirens_14, range=98 (-301,-53,-88)

an_enthralled_bulthar (100%)

sirens_15, range=165 (-225,-30,-108)

sirens_16, range=198 (-227,18,-108)

sirens_17, range=148 (-469,-45,-88)

sirens_18, range=124 (-250,-64,-88)

sirens_19, range=68 (-387,-77,-88)

sirens_20, range=196 (-301,54,-88)

sirens_43, range=141 (-492,-119,-115)

sirens_48, range=95 (-404,-216,-57)

sirens_58, range=193 (-522,-229,-52)

sirens_59, range=181 (-493,-250,-51)

sirens_60, range=160 (-500,-198,-52)

sirens_64, range=182 (-531,-98,-91)

sirens_65, range=149 (-498,-167,-90)

sirens_68, range=55 (-331,-187,-169)

a_neriad_mistress (50%)
a_swordfish (50%)

sirens_74, range=161 (-196,-179,-163)

a_neriad_mistress (100%)

sirens_77, range=84 (-273,-166,-167)

sirens_79, range=110 (-380,-243,-170)

sirens_84, range=191 (-213,-6,-33)

a_coldspine_seahorse (100%)

a_coldspine_sea_hors_190196, range=77 (-374,-210,-169)

a_coldspine_seahorse (50%)
a_swordfish (50%)

a_coldspine_sea_hors_190198, range=187 (-169,-179,-166)

a_coldspine_seahorse (100%)

sirens_112965, range=137 (-215,-139,3)

Wygrish (100%)

sirens_223847_takp_import_v0, range=179 (-492,-249,-51)

sirens_an_enthralled_bulthar6_takp_import_v0, range=115 (-263,-62,-88)

an_enthralled_bulthar (100%)

sirens_a_coldspine_sea_horse14_takp_import_v0, range=140 (-491,-118,-118)

sirens_223869_takp_import_v0, range=77 (-374,-210,-173)

a_siren_enticer (50%)
a_siren_seductress (50%)

sirens_223870_takp_import_v0, range=87 (-310,-213,-170)

sirens_223862_takp_import_v0, range=54 (-330,-186,-169)

sirens_223850_takp_import_v0, range=109 (-379,-242,-170)

sirens_a_servant_sea_elephant109_takp_import_v0, range=126 (-249,-63,-88)

a_servant_sea_elephant (100%)

sirens_an_enthralled_ulthork16_takp_import_v0, range=194 (-291,49,-85)

an_enthralled_ulthork (100%)

sirens_223859_takp_import_v0, range=196 (-300,54,-88)

a_servant_manatee (50%)
a_servant_sea_elephant (50%)