NPCs composing that spawngroup :

a_coldspine_seahorse (29%)

a_neriad_maiden (33%)

a_neriad_maiden (33%)

a_neriad_sea_princess (5%)

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

sirens_48, range=45 (-544,-438,-41)

sirens_57, range=81 (-573,-473,-196)

a_neriad_mistress (100%)

sirens_63, range=97 (-402,-447,-116)

sirens_66, range=58 (-544,-476,-41)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_67, range=57 (-554,-453,-41)

an_enthralled_bulthar (50%)
an_enthralled_molkor (50%)

sirens_118, range=98 (-406,-469,-117)

an_enthralled_bulthar (50%)
an_enthralled_bulthar (50%)

sirens_231256, range=1 (-498,-437,-210)

a_servant_swordfish (100%)

sirens_231262, range=44 (-543,-438,-41)

an_enthralled_molkor (100%)

sirens_231274, range=98 (-401,-446,-116)

a_watery_servant (100%)

sirens_231275, range=55 (-553,-452,-41)