NPCs composing that spawngroup :

a_siren_myrmidon (50%)

a_siren_templar (50%)

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

sirens_27, range=85 (36,-1,-80)

a_siren_myrmidon (50%)
a_siren_myrmidon (50%)

sirens_36, range=96 (34,-26,-135)

sirens_37, range=70 (24,11,-135)

sirens_47, range=63 (19,20,-20)

a_coldspine_seahorse (50%)
a_swordfish (50%)

sirens_72, range=62 (-51,-30,-133)

sirens_74, range=87 (-27,-54,-157)

a_neriad_mistress (100%)

sirens_125, range=87 (44,27,-54)

sirens_127, range=88 (45,36,-80)

sirens_128, range=55 (4,62,-135)

sirens_129, range=22 (-34,53,-125)

sirens_131, range=27 (-54,7,-110)

a_siren_beguiler (50%)
a_siren_templar (50%)

sirens_132, range=52 (-64,-16,-104)

sirens_133, range=98 (-57,-65,-100)

sirens_134, range=78 (-63,-44,-100)

a_servant_swordfish_190209, range=96 (53,20,-16)

a_swordfish (100%)

sirens_231256, range=33 (-19,8,-13)

a_servant_swordfish (100%)
a_servant_swordfish (100%)

sirens_231263, range=61 (17,46,3)

sirens_231274, range=61 (-50,-29,-133)

a_watery_servant (100%)

sirens_231277, range=95 (34,-25,-135)

sirens_231278, range=55 (4,62,-135)

a_siren_seductress (100%)