NPCs composing that spawngroup :

a_coldspine_seahorse (100%)

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

sirens_9, range=129 (-571,-113,-112)

sirens_10, range=42 (-551,-25,-92)

sirens_12, range=60 (-511,-52,-114)

sirens_16, range=197 (-555,202,-154)

sirens_17, range=74 (-469,-45,-88)

sirens_19, range=159 (-387,-77,-88)

sirens_21, range=104 (-457,88,-114)

sirens_22, range=129 (-408,67,-88)

sirens_39, range=189 (-492,194,-155)

sirens_40, range=143 (-513,150,-151)

sirens_41, range=149 (-544,155,-152)

sirens_43, range=129 (-492,-119,-115)

sirens_64, range=105 (-531,-98,-91)

sirens_65, range=175 (-498,-167,-90)

sirens_78, range=196 (-577,-182,-114)

sirens_86, range=163 (-607,147,-203)

sirens_93, range=198 (-353,110,-19)

sirens_94, range=181 (-694,67,-168)

sirens_95, range=183 (-667,120,-194)

sirens_96, range=155 (-649,98,-191)