Animal Crossing New Horizons September Leaving Fish and BugsNintendo Life

Every month in Animal Crossing: New Horizons a selection of the game's 80 fish, 80 bugs and 40 sea creatures cycle in or out. The catchable creatures that make up your Critterpedia migrate based on the real-time seasons tied to your Switch's internal clock, so unless you mess with your console's clock and engage in some time-travelling shenanigans, Wednesday 30th September is the last day for some time that you'll be able to catch the fish and bugs listed below.

The seasons in Animal Crossing: New Horizons are based on your choice of Northern or Southern hemisphere at the beginning of the game. Different fish and bugs coming and going every month, but wherever you are in the world you'll have the opportunity to catch everything at some point during a calendar year.

We have listed all the bugs, fish and sea creatures that will be leaving Animal Crossing: New Horizons in both hemispheres below. They are listed in Critterpedia order but click the column headers to reorder them to your liking.

In addition to the outgoing critters, we have also listed the incoming fish, bugs and sea creatures returning after a hiatus to each hemisphere this month.

If you're after more information on bugs, fish or sea creatures, check out our complete New Horizons fish guide, bug guide and sea creature guide. Each contains information regarding the exact location of all critters on your island along with when they're available. Don't forget to also check out our exhaustive Animal Crossing: New Horizons guide hub while you're at it.

The fish, bugs and sea creatures leaving Animal Crossing: New Horizons at the end of September

Northern Hemisphere

The following fish will no longer be available to catch in October in the Northern hemisphere:

Fish pic

Fish name

Time of day

Location

Returns in

11. Crawfish Animal Crossing New Horizons Fish

Crawfish

All day and night

Ponds

Apr 2021

12. Soft Shelled Turtle Animal Crossing New Horizons Fish

Soft-shelled Turtle

4pm - 9am

Rivers

Aug 2021

26. Sweetfish Animal Crossing New Horizons Fish

Sweetfish

All day and night

Rivers

Jul 2021

31. Salmon Animal Crossing New Horizons Fish

Salmon

All day and night

River mouth

Sep 2021

32. King Salmon Animal Crossing New Horizons Fish

King Salmon

All day and night

River mouth

Sep 2021

35. Nibble Fish Animal Crossing New Horizons Fish
Nibble Fish 9am - 4pm Rivers May 2021
40. Piranha Animal Crossing New Horizons Fish
Piranha 9am - 4pm, 9pm - 4am Rivers Jun 2021
41. Arowana Animal Crossing New Horizons Fish
Arowana 4pm - 9am Rivers Jun 2021
42. Dorado Animal Crossing New Horizons Fish
Dorado 4am - 9pm Rivers Jun 2021
43. Gar Animal Crossing New Horizons Fish
Gar 4pm - 9am Ponds Jun 2021
44. Arapaima Animal Crossing New Horizons Fish
Arapaima 4pm - 9am Rivers Jun 2021
45. Saddled Bichir Animal Crossing New Horizons Fish
Saddled Bichir 9pm - 4am Rivers Jun 2021
50. Surgeonfish Animal Crossing New Horizons Fish
Surgeonfish All day and night Sea Apr 2021
51. Butterfly Fish Animal Crossing New Horizons Fish
Butterfly Fish All day and night Sea Apr 2021
55. Puffer Fish Animal Crossing New Horizons Fish
Puffer Fish All day and night Sea Jul 2021
67. Blue Marlin Animal Crossing New Horizons Fish
Blue Marlin All day and night Sea Jul 2021
70. Ocean Sunfish Animal Crossing New Horizons Fish
Ocean Sunfish 4am - 9pm Sea Jul 2021
72. Saw Shark Animal Crossing New Horizons Fish
Saw Shark 4pm - 9am Sea Jun 2021
73. Hammerhead Shark Animal Crossing New Horizons Fish
Hammerhead Shark 4pm - 9am Sea Jun 2021
74. Great White Shark Animal Crossing New Horizons Fish
Great White Shark 4pm - 9am Sea Jun 2021
75. Whale Shark Animal Crossing New Horizons Fish
Whale Shark All day and night Sea Jun 2021
76. Suckerfish Animal Crossing New Horizons Fish
Suckerfish All day and night Sea Jun 2021

The following bugs will no longer be available to catch in October in the Northern hemisphere:

Bug pic

Bug name

Time of day

Location

Returns in

3. Tiger Butterfly Animal Crossing New Horizons Bug

Tiger Butterfly

4am - 7pm

Air

Mar 2021

9. Emperor Butterfly Animal Crossing New Horizons Bug

Emperor Butterfly

5pm - 8am

Air

Dec

10. Agrias Butterfly Animal Crossing New Horizons Bug

Agrias Butterfly

8am - 5pm

Air

Apr 2021

11. Rajah Brooke's Birdwing Animal Crossing New Horizons Bug

Rajah Brooke's Birdwing

8am - 5pm

Air

Apr 2021

12. Queen Alexandra's Birdwing Animal Crossing New Horizons Bug

Queen Alexandra's Birdwing

8am - 4pm

Air

May 2021

14. Atlas Moth Animal Crossing New Horizons Bug

Atlas Moth

7pm - 4am

On trees

Apr 2021

15. Madagascan Sunset Moth Animal Crossing New Horizons Bug

Madagascan Sunset Moth

8am - 4pm

Air

Apr 2021

19. Grasshopper Animal Crossing New Horizons Bug

Grasshopper

8am - 5pm

Ground

Jul 2021

29. Walker Cicada Animal Crossing New Horizons Bug

Walker Cicada

8am - 5pm

On trees

Aug 2021

38. Pondskater Animal Crossing New Horizons Bug

Pondskater

8am - 7pm

On ponds

May 2021

39. Diving Beetle Animal Crossing New Horizons Bug

Diving Beetle

8am - 7pm

On ponds and rivers

May 2021

40. Giant Water Bug Animal Crossing New Horizons Bug

Giant Water Bug

8am - 7pm

On ponds and rivers

Apr 2021

48. Rosalia Batesi Beetle Animal Crossing New Horizons Bug

Rosalia Batesi Beetle

All day and night

Tree stumps

May 2021

51. Earth Boring Dung Beetle Animal Crossing New Horizons Bug

Earth-boring Beetle

All day and night

Ground

Jul 2021

54. Golaiath Beetle Animal Crossing New Horizons Bug

Goliath Beetle

5pm - 8am

On palm trees

Jun 2021

58. Rainbow Stag Animal Crossing New Horizons Bug

Rainbow Stag

7pm - 8am

On trees

Jun 2021

73. Mosquito Animal Crossing New Horizons Bug

Mosquito

5pm - 4am

Air

Jun 2021

The following sea creatures will no longer be available to catch in October in the Northern hemisphere:

Sea Creature name

Time of day

Returns in

Flatworm

4pm - 9am

Aug 2021

Gigas Giant Clam

Any time

May 2021

Horseshoe Crab 9pm - 4am Jul 2021
Moon Jellyfish Any time Jul 2021
Sea Grapes Any time Jun 2021
Sea Urchin Any time May 2021
Slate Pencil Urchin 4pm - 9am May 2021
Tiger Prawn 4pm - 9am Jun 2021

Southern Hemisphere

The following fish will no longer be available to catch in October in the Southern hemisphere:

Fish pic

Fish name

Time of day

Location

Returns in

1. Bitterling Animal Crossing New Horizons Fish

Bitterling

All day and night

Rivers

May 2021

21. Yellow Perch Animal Crossing New Horizons Fish

Yellow Perch

All day and night

Rivers

Apr 2021

30. Stringfish Animal Crossing New Horizons Fish
Stringfish 4pm - 9am Clifftop rivers Jun 2021
46. Sturgeon Animal Crossing New Horizons Fish
Sturgeon All day and night River mouth Mar 2021
47. Sea Butterfly Animal Crossing New Horizons Fish
Sea Butterfly All day and night Sea Jun 2021
77. Football Fish Animal Crossing New Horizons Fish
Football Fish 4pm - 9am Sea May 2021

The following bugs will no longer be available to catch in October in the Southern hemisphere:

Bug pic

Bug name

Time of day

Location

Returns in

9. Emperor Butterfly Animal Crossing New Horizons Bug

Emperor Butterfly

5pm - 8am

Air

Dec

The following sea creatures will no longer be available to catch in October in the Southern hemisphere:

Sea Creature name

Time of day

Returns in

Red King Crab

Any time

May 2021

Incoming Critters in September - Fish, Bugs and Sea Creatures returning in September

Northern Hemisphere

These are the fish and bugs returning in September in the Northern hemisphere:

New Fish (September - Northern hemisphere)

  • Pike (All day and night / Rivers)
  • Cherry Salmon (4pm - 9am / Rivers)
  • Char (4pm - 9am / Rivers and ponds)
  • Golden Trout (4pm - 9am / Clifftop rivers)
  • Salmon (All day and night / River mouth) Available for one month only!
  • King Salmon (All day and night / River mouth) Available for one month only!
  • Mitten Crab (4pm - 9am / Rivers)
  • Sturgeon (All day and night / River mouth)

New Bugs (September - Northern hemisphere)

  • Common Butterfly (4am - 7pm / Air)
  • Yellow Butterfly (4am - 7pm / Air)
  • Monarch Butterfly (4am - 5pm / Air)
  • Cricket (5pm - 8am / Ground)
  • Bell Cricket (5pm - 8am / Ground)
  • Red Dragonfly (8am - 7pm / Air)
  • Violin Beetle (All day and night / Tree stumps)
  • Pill Bug (11pm - 4pm / Hit rocks)
  • Centipede (4pm - 11pm / Hit rocks)

New Sea Creatures (September - Northern hemisphere) Note: Sea Creatures were introduced in the July update)

  • Chambered Nautilus (4pm - 9am / Sea)
  • Oyster (Any time / Sea)
  • Sweet Shrimp (4pm - 9am / Sea)
  • Turban Shell (Any time / Sea)
  • Umbrella Octopus (Any time / Sea)

Southern Hemisphere

These are the fish and bugs returning in September in the Southern hemisphere:

New fish (September - Southern Hemisphere)

  • Tadpole (All day and night / Ponds)
  • Loach (All day and night / Rivers)
  • Cherry Salmon (4pm - 9am / Rivers)
  • Char (4pm - 9am / Rivers and ponds)
  • Golden Trout (4pm - 9am / Clifftop rivers)
  • Barred Knifejaw (All day and night / Sea)

New bugs (September - Southern Hemisphere)

  • Yellow Butterfly (4am - 7pm / Air)
  • Tiger Butterfly (4am - 7pm / Air)
  • Peacock Butterfly (4am - 7pm / Air)
  • Mantis (8am - 5pm / On flowers)
  • Orchid Mantis (8am - 5pm / On white flowers)
  • Honeybee (8am - 5pm / Air around flowers)
  • Stinkbug (All day and night / Flowers)
  • Man-faced Stinkbug (7pm - 8am / Flowers)
  • Ladybug (8am - 5pm / Flowers)

New Sea Creatures (September - Southern hemisphere) Note: Sea Creatures were introduced in the July update)

  • Firefly Squid (9pm - 4am / Sea)
  • Spider Crab (Any time / Sea)
  • Turban Shell (Any time / Sea)
  • Umbrella Octopus (Any time / Sea)

This article is part of our Animal Crossing: New Horizons walkthrough, which includes a Complete Fish List, Complete Bug List and Complete Sea Creatures List. If you're looking for specific fish or bug, we can tell you how to catch the elusive Coelacanth, Mahi-Mahi, Giant Trevally, Stringfish, Golden Trout and all the Sharks, along with a list of Fish And Bugs leaving at the end of September. We've also compiled a Complete Villager List and a Complete List of K.K. Slider Songs, as well as selections of the Best Custom Design Codes and Islands we've found so far, as well as islands you can visit using Dream Address Codes.

We can also help with How to Spot Redd's Fake Paintings and Statues, How to Make Bells Fast, How to Breed Flowers, How to Get more DIY Recipes, How to Upgrade Nook's Cranny, how to make friends with special characters like Gulliver, Sable, Label and Wisp, plus tips on using the Star Wand, Tool Ring, Rock Trick, Cutting Down and Moving Trees, using amiibo on Harv's Island, How to Back Up Your Island Data and much more.

And finally Where To Buy Animal Crossing: New Horizons On Nintendo Switch if for some reason you haven't yet picked up the game.