Animal Crossing: New Horizons new fish, bugs, and sea creatures to catch in December

With December starting, Animal Crossing: New Horizons players are bound to find a different batch of fish, bugs, and sea creatures around their islands.

There’s no rush to catch any of them, as most of them will stick around for much longer than a month, but make sure you donate any new finds to Blathers to complete your Museum. You can tell when you’ve caught a new creature because your character will exclaim “Yes!” before they say the bug or fish’s name.

You can also check in your Critterpedia to see if you’ve donated the bug fish or not. If you have, there will be a little owl icon next to the critter name. (Note that these emblems won’t show up if you’re on somebody else’s island.)

We’ve broken up the list of new bugs and fish to catch in December by hemisphere below, so you can check which ones are new in your area. Keep in mind that some of these are returning to your island after being previously available, so if they seem familiar, you likely caught them during an earlier availability.

New critters to find in Animal Crossing: New Horizons for December (Northern Hemisphere)

Critter Type Name Location Shadow Size Time
Critter Type Name Location Shadow Size Time
Bug Emperor Butterfly Flying N/A 5 p.m. – 8 a.m.
Bug Raja Brooke’s Birdwing Flying by purple flowers N/A 8 a.m. – 5 p.m.
Fish Pond Smelt River Small All day
Fish Stringfish River (Clifftop) X Large All day
Fish Sea Butterfly Sea Smallest All day
Fish Squid Sea Medium All day
Fish Oarfish Sea Largest All day

New critters to find in Animal Crossing: New Horizons for December (Southern Hemisphere)

Critter Type Name Location Shadow Size Time
Critter Type Name Location Shadow Size Time
Bug Emperor Butterfly Flying N/A 5 p.m. – 8 a.m.
Bug Firefly Flying N/A 7 p.m. – 4 a.m.
Bug Drone Beetle On trees N/A All day
Bug Goliath Beetle On coconut trees N/A 5 p.m. – 8 a.m.
Bug Rainbow Stag On trees N/A 7 p.m. – 8 a.m.
Bug Mosquito Flying N/A 5 p.m. – 4 a.m.
Fish Tilapia River Medium All day
Fish Piranha River Small 9 a.m. – 4 p.m., 9 p.m. – 4 a.m.
Fish Arowana River Large 4 p.m. – 9 a.m.
Fish Dorado River X Large 4 a.m. – 9 p.m.
Fish Gar Pond Largest 4 p.m. – 9 a.m.
Fish Arapaima River Largest 4 p.m. – 9 a.m.
Fish Saddled Bichir River Large 9 p.m. – 4 a.m.
Fish Ribbon Eel Sea Narrow All day
Fish Saw Shark Sea Largest (Fin) 4 p.m. – 9 a.m.
Fish Hammerhead Shark Sea Largest (Fin) 4 p.m. – 9 a.m.
Fish Great White Shark Sea Largest (Fin) 4 p.m. – 9 a.m.
Fish Whale Shark Sea Largest (Fin) All day
Fish Suckerfish Sea Large (Fin) All day
Sea Creature Sea grapes Ocean (diving) N/A All day
Sea Creature Mussel Ocean (diving) N/A All day
Sea Creature Abalone Ocean (diving) N/A 4 p.m. – 9 a.m.
Sea Creature Gazami crab Ocean (diving) N/A All day
Sea Creature Tiger prawn Ocean (diving) N/A 4 p.m. – 9 a.m.
Sea Creature Sea pineapple Ocean (diving) N/A All day