diff --git a/code/modules/events/carp_migration.dm b/code/modules/events/carp_migration.dm
index abab5c39254..cd9b0c02206 100644
--- a/code/modules/events/carp_migration.dm
+++ b/code/modules/events/carp_migration.dm
@@ -2,6 +2,10 @@
 	announceWhen	= 50
 	endWhen 		= 900
 
+	var/list/spawned_mobs = list(
+    /mob/living/simple_animal/hostile/carp = 95,
+    /mob/living/simple_animal/hostile/carp/megacarp = 5,
+	)
 	var/list/spawned_carp = list()
 
 /datum/event/carp_migration/setup()
@@ -17,6 +21,7 @@
 	event_announcement.Announce(announcement, "Lifesign Alert")
 
 /datum/event/carp_migration/start()
+
 	if(severity == EVENT_LEVEL_MAJOR)
 		spawn_fish(landmarks_list.len)
 	else if(severity == EVENT_LEVEL_MODERATE)
@@ -32,19 +37,17 @@
 			spawn_locations.Add(C.loc)
 	spawn_locations = shuffle(spawn_locations)
 	num_groups = min(num_groups, spawn_locations.len)
-	
+
 	var/i = 1
 	while(i <= num_groups)
 		var/group_size = rand(group_size_min, group_size_max)
 		for(var/j = 1, j <= group_size, j++)
-			var/carptype = /mob/living/simple_animal/hostile/carp
-			if(prob(5))
-				carptype = /mob/living/simple_animal/hostile/carp/megacarp
+			var/carptype = pickweight(spawned_mobs)
 			spawned_carp.Add(new carptype(spawn_locations[i]))
 		i++
 
 /datum/event/carp_migration/end()
-	for(var/mob/living/simple_animal/hostile/carp/C in spawned_carp)
+	for(var/mob/living/simple_animal/hostile/C in spawned_carp)
 		if(!C.stat)
 			var/turf/T = get_turf(C)
 			if(istype(T, /turf/space))
diff --git a/code/modules/events/event_container.dm b/code/modules/events/event_container.dm
index ef7b99e1133..888e2b38dd1 100644
--- a/code/modules/events/event_container.dm
+++ b/code/modules/events/event_container.dm
@@ -139,7 +139,8 @@ var/list/event_last_fired = list()
 		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Vermin Infestation",/datum/event/infestation, 		100,	list(ASSIGNMENT_JANITOR = 100)),
 		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Sentience",			/datum/event/sentience,			50),
 		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Wallrot",			/datum/event/wallrot, 			0,		list(ASSIGNMENT_ENGINEER = 30, ASSIGNMENT_GARDENER = 50)),
-		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Aurora Caelus",		/datum/event/aurora_caelus,		15,		is_one_shot = TRUE)
+		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Aurora Caelus",		/datum/event/aurora_caelus,		15,		is_one_shot = TRUE),
+		new /datum/event_meta(EVENT_LEVEL_MUNDANE, "Koi School",		/datum/event/carp_migration/koi,		80,)
 	)
 
 /datum/event_container/moderate
diff --git a/code/modules/events/koi_mirgration.dm b/code/modules/events/koi_mirgration.dm
new file mode 100644
index 00000000000..868457721b2
--- /dev/null
+++ b/code/modules/events/koi_mirgration.dm
@@ -0,0 +1,9 @@
+/datum/event/carp_migration
+	spawned_mobs = list(
+    /mob/living/simple_animal/hostile/retaliate/carp/koi = 95,
+    /mob/living/simple_animal/hostile/retaliate/carp/koi/honk = 2,
+	)
+
+
+/datum/event/carp_migration/koi/start()
+	spawn_fish(landmarks_list.len)
\ No newline at end of file
diff --git a/code/modules/mob/living/simple_animal/hostile/retaliate/fish.dm b/code/modules/mob/living/simple_animal/hostile/retaliate/fish.dm
index 3462e8e18e7..7b10c0e828a 100644
--- a/code/modules/mob/living/simple_animal/hostile/retaliate/fish.dm
+++ b/code/modules/mob/living/simple_animal/hostile/retaliate/fish.dm
@@ -27,4 +27,41 @@
 	speak_emote = list("gnashes")
 
 	faction = list("carp")
-	flying = 1
\ No newline at end of file
+	flying = 1
+
+
+/mob/living/simple_animal/hostile/retaliate/carp/koi
+	name = "space koi"
+	desc = "A gentle space-faring koi."
+	icon = 'icons/obj/fish_items.dmi'
+	icon_state = "koi1"
+	icon_living = "koi1"
+	icon_dead = "koi1-dead"
+
+	harm_intent_damage = 1
+	melee_damage_lower = 2
+	melee_damage_upper = 2
+	speak_emote = list("blurps")
+	butcher_results = null
+
+	atmos_requirements = list("min_oxy" = 0, "max_oxy" = 0, "min_tox" = 0, "max_tox" = 0, "min_co2" = 0, "max_co2" = 0, "min_n2" = 0, "max_n2" = 0)
+	minbodytemp = 0
+	maxbodytemp = 1500
+
+	gold_core_spawnable = CHEM_MOB_SPAWN_HOSTILE
+
+/mob/living/simple_animal/hostile/retaliate/carp/koi/New()
+	..()
+	var/koinum = rand(1, 4)
+	icon_state = "koi[koinum]"
+	icon_living = "koi[koinum]"
+	icon_dead = "koi[koinum]-dead"
+
+
+/mob/living/simple_animal/hostile/retaliate/carp/koi/Process_Spacemove(var/movement_dir)
+	return TRUE
+
+/mob/living/simple_animal/hostile/retaliate/carp/koi/honk
+	icon_state = "koi5"
+	icon_living = "koi5"
+	icon_dead = "koi5-dead"
\ No newline at end of file
diff --git a/icons/obj/fish_items.dmi b/icons/obj/fish_items.dmi
index fd8eea36540..76a9486fee6 100644
Binary files a/icons/obj/fish_items.dmi and b/icons/obj/fish_items.dmi differ
diff --git a/paradise.dme b/paradise.dme
index 27b83d130fb..402b6bd167f 100644
--- a/paradise.dme
+++ b/paradise.dme
@@ -1346,6 +1346,7 @@
 #include "code\modules\events\immovable_rod.dm"
 #include "code\modules\events\infestation.dm"
 #include "code\modules\events\ion_storm.dm"
+#include "code\modules\events\koi_mirgration.dm"
 #include "code\modules\events\mass_hallucination.dm"
 #include "code\modules\events\meaty_gore.dm"
 #include "code\modules\events\meaty_ops.dm"