NPCs composing that spawngroup :

a_twitching_swordfish (100%)

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

sirens_15, range=156 (-225,-30,-108)

sirens_16, range=118 (-227,18,-108)

sirens_18, range=198 (-250,-64,-88)

sirens_20, range=163 (-301,54,-88)

sirens_37, range=194 (24,11,-135)

sirens_47, range=186 (19,20,-20)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_51, range=147 (-293,121,-121)

sirens_62, range=199 (-342,140,-19)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_72, range=165 (-51,-30,-133)

sirens_74, range=198 (-27,-54,-157)

a_neriad_mistress (100%)

sirens_81, range=55 (-201,102,3)

sirens_84, range=128 (-213,-6,-33)

a_coldspine_seahorse (100%)

sirens_128, range=156 (4,62,-135)

sirens_129, range=123 (-34,53,-125)

sirens_130, range=126 (-43,32,-117)

a_siren_myrmidon (50%)
a_siren_templar (50%)

sirens_131, range=134 (-54,7,-110)

a_siren_beguiler (50%)
a_siren_templar (50%)

sirens_132, range=146 (-64,-16,-104)

sirens_133, range=191 (-57,-65,-100)

sirens_134, range=170 (-63,-44,-100)

a_coldspine_sea_hors_190199, range=85 (-152,20,-22)

a_coldspine_seahorse (100%)

sirens_223847_takp_import_v0, range=164 (-50,-29,-133)

sirens_an_enthralled_bulthar6_takp_import_v0, range=194 (-16,-40,3)

an_enthralled_bulthar (100%)

sirens_a_coldspine_sea_horse14_takp_import_v0, range=118 (-226,18,-108)

sirens_223842_takp_import_v0, range=198 (-341,140,-19)

sirens_a_servant_swordfish9_takp_import_v0, range=159 (-19,8,-13)

a_servant_swordfish (100%)

sirens_223869_takp_import_v0, range=170 (-62,-43,-100)

sirens_a_siren_enticer8_takp_import_v0, range=191 (-56,-64,-100)

a_siren_enticer (100%)

sirens_223843_takp_import_v0, range=92 (-237,91,3)

an_enthralled_molkor (50%)
an_enthralled_ulthork (50%)

sirens_223858_takp_import_v0, range=54 (-200,102,3)

a_servant_sea_elephant (50%)
a_servant_walrus (50%)

sirens_a_servant_sea_elephant109_takp_import_v0, range=197 (-249,-63,-88)

a_servant_sea_elephant (100%)

sirens_an_enthralled_ulthork16_takp_import_v0, range=155 (-291,49,-85)

an_enthralled_ulthork (100%)
an_enthralled_ulthork (100%)

sirens_223859_takp_import_v0, range=162 (-300,54,-88)

a_servant_manatee (50%)
a_servant_sea_elephant (50%)