NPCs composing that spawngroup :

a_siren_beguiler (33%)

a_siren_myrmidon (33%)

a_siren_myrmidon (34%)

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

sirens_1, range=80 (83,-60,-146)

sirens_23, range=89 (47,-60,5)

sirens_26, range=66 (112,-202,3)

an_enthralled_bulthar (100%)

sirens_28, range=38 (104,-175,-135)

sirens_29, range=61 (137,-175,-135)

sirens_30, range=78 (165,-133,-135)

sirens_35, range=79 (33,-81,-135)

sirens_38, range=59 (28,-129,-135)

a_siren_beguiler (100%)

sirens_57, range=66 (128,-88,-149)

a_neriad_mistress (100%)

sirens_71, range=69 (119,-78,-153)

a_neriad_mistress (50%)
a_neriad_mistress (50%)

sirens_73, range=98 (65,-44,-148)

sirens_74, range=82 (5,-145,-151)

a_neriad_mistress (100%)

sirens_80, range=56 (107,-193,3)

sirens_109, range=92 (115,-52,-100)

sirens_110, range=78 (115,-67,-100)

sirens_112, range=93 (179,-158,3)

sirens_113, range=79 (164,-161,3)

sirens_118, range=62 (132,-97,3)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

sirens_120, range=33 (120,-141,-54)

sirens_121, range=47 (134,-137,-54)

a_siren_beguiler (50%)
a_siren_myrmidon (50%)

sirens_126, range=61 (36,-106,-80)

a_siren_templar (50%)
a_siren_templar (50%)

sirens_137, range=87 (7,-175,-135)

a_servant_sea_elepha_190188, range=80 (71,-61,-148)

a_coldspine_sea_hors_190201, range=98 (75,-42,-149)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_288181, range=70 (102,-71,-135)

##_an_alluring_siren (100%)

sirens_288182, range=93 (179,-158,3)

sirens_288185, range=89 (47,-60,5)

sirens_288186, range=62 (132,-97,3)

##_an_enthralled_bulthar (100%)

sirens_288194, range=80 (83,-60,-146)

##_a_coldspine_seahorse (70%)
##_a_swordfish (30%)

sirens_288196, range=98 (75,-42,-149)

##_a_coldspine_seahorse (100%)

sirens_288200, range=66 (128,-88,-149)

sirens_288201, range=69 (119,-78,-153)

sirens_288202, range=56 (107,-193,3)

##_#a_massive_manatee (15%)
##_a_servant_manatee (85%)

sirens_288204, range=38 (104,-175,-135)

sirens_288205, range=59 (28,-129,-135)

sirens_288208, range=79 (33,-81,-135)

##_#a_deadly_siren (100%)

sirens_288209, range=61 (36,-106,-80)

##_a_siren_myrmidon (60%)
##_a_siren_templar (40%)

sirens_374555, range=96 (174,-182,6)