NPCs composing that spawngroup :

a_beggar (3%)

a_cave_myotis_bat (5%)

a_fire_beetle (18%)

a_gelatinous_cube (3%)

a_giant_sewer_rat (20%)

a_gopher_snake (5%)

a_green_snake (3%)

a_large_snake (3%)

a_large_spider (10%)

a_mossy_skeleton (5%)

a_sewer_rat (15%)

a_sludge_spiderling (10%)

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

qcat_a_shark18, range=82 (657,90,-91)

a_shark (100%)

qcat_a_fish0, range=61 (691,157,-53)

a_fish (40%)
a_fish (40%)
a_fish (40%)
a_fish (40%)
a_fish (40%)
a_fish (40%)
a_large_piranha (10%)
a_large_piranha (10%)
a_large_piranha (10%)
a_piranha (10%)
a_piranha (10%)
a_piranha (10%)

qcat_Neab173, range=54 (699,75,-81)

Neab (50%)
Timvu (50%)

qcat_Riggin_Vix174, range=73 (704,49,-81)

Omorb (50%)
Riggin_Vix (50%)

qcat_a_dread_corpse26, range=31 (735,146,-39)

a_dread_corpse (75%)
Ronn_Castekin (25%)

qcat_222512, range=75 (668,148,-53)