NPCs composing that spawngroup :

an_enthralled_molkor (100%)

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

sirens_1, range=93 (83,-60,-146)

sirens_19, range=85 (46,-47,5)

sirens_23, range=97 (47,-60,5)

sirens_24, range=13 (74,20,3)

sirens_27, range=77 (102,-40,-135)

sirens_36, range=73 (34,-26,-135)

sirens_37, range=57 (24,11,-135)

sirens_44, range=74 (100,104,2)

sirens_45, range=81 (148,-8,3)

sirens_47, range=58 (19,20,-20)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_73, range=77 (65,-44,-148)

sirens_109, range=93 (115,-52,-100)

sirens_123, range=23 (100,28,-54)

a_siren_beguiler (50%)
a_siren_myrmidon (50%)

sirens_124, range=67 (143,18,-54)

sirens_125, range=33 (44,27,-54)

sirens_127, range=32 (45,36,-80)

sirens_128, range=78 (4,62,-135)

a_servant_sea_elepha_190188, range=94 (71,-61,-148)

a_coldspine_sea_hors_190201, range=75 (75,-42,-149)

a_coldspine_seahorse (50%)
a_swordfish (50%)

a_servant_swordfish_190209, range=27 (53,20,-16)

a_swordfish (100%)

a_servant_swordfish_190210, range=53 (54,-15,-19)

a_swordfish (100%)

sirens_223842_takp_import_v0, range=84 (46,-46,5)

sirens_a_servant_swordfish9_takp_import_v0, range=99 (-19,8,-13)

sirens_223869_takp_import_v0, range=32 (45,36,-80)

sirens_223857_takp_import_v0, range=94 (71,-61,-152)

a_servant_manatee (50%)
a_servant_walrus (50%)

sirens_223851_takp_import_v0, range=92 (84,-59,-149)

sirens_223844_takp_import_v0, range=75 (75,-42,-150)

sirens_a_siren_enticer8_takp_import_v0, range=72 (34,-25,-135)

sirens_223876_takp_import_v0, range=96 (47,-59,5)

an_enthralled_bulthar (50%)
an_enthralled_ulthork (50%)