Animal Crossing: New Horizons fish guide and complete list

1 Bitterling River Smallest 900 All day November-March (Northern) / May-September (Southern) 2 Pale Chub River Smallest 160 9 a.m. – 4 p.m. Year-round (Northern and Southern) 3 Crucian Carp River Small 160 All day Year-round (Northern and Southern) 4 Dace River Medium 240 4 p.m. – 9 a.m. Year-round (Northern and Southern) 5 Carp Pond Large 300 All day Year-round (Northern and Southern) 6 Koi Pond Large 4,000 4 p.m. – 9 a.m. Year-round (Northern and Southern) 7 Goldfish Pond Smallest 1,300 All day Year-round (Northern and Southern) 8 Pop-eyed Goldfish Pond Smallest 1,300 9 a.m. – 4 p.m. Year-round (Northern and Southern) 9 Ranchu Goldfish Pond Small 4,500 9 a.m. – 4 p.m. Year-round (Northern and Southern) 10 Killifish Pond Smallest 300 All day April-August (Northern) / October-February (Southern) 11 Crawfish Pond Small 200 All day April-September (Northern) / October-March (Southern) 12 Soft-shelled Turtle River Large 3,750 4 p.m. – 9 a.m. August-September (Northern) / February-March (Southern) 13 Snapping Turtle River X Large 5,000 9 p.m. – 4 a.m. April-October (Northern) / October-April (Southern) 14 Tadpole Pond Smallest 100 All day March-July (Northern) / September-January (Southern) 15 Frog Pond Small 120 All day May-August (Northern) / November-Feburary (Southern) 16 Freshwater Goby River Small 400 4 p.m. – 9 a.m. Year-round (Northern and Southern) 17 Loach River Small 400 All day March-May (Northern) / September-November (Southern) 18 Catfish Pond Large 800 4 p.m. – 9 a.m. May-October (Northern) / November-April (Southern) 19 Giant Snakehead Pond X Large 5,500 9 a.m. – 4 p.m. June-August (Northern) / December-February (Southern) 20 Bluegill River Small 180 9 a.m. – 4 p.m. Year-round (Northern and Southern) 21 Yellow Perch River Medium 300 All day October-March (Northern) / April-September (Southern) 22 Black Bass River Large 400 All day Year-round (Northern and Southern) 23 Tilapia River Medium 800 All day June-October (Northern) / December-April (Southern) 24 Pike River X Large 1,800 All day September-December (Northern) / March-June (Southern) 25 Pond Smelt River Small 500 All day December-February (Northern) / June-August (Southern) 26 Sweetfish River Medium 900 All day July-September (Northern) / January-March (Southern) 27 Cherry Salmon River (Clifftop) Medium 1,000 4 p.m. – 9 a.m. March-June, September-November (Northern) / March-May, September-December (Southern) 28 Char River (Clifftop) Medium 3,800 4 p.m. – 9 a.m. March-June, September-November (Northern) / March-May, September-December (Southern) 29 Golden Trout River (Clifftop) Medium 15,000 4 p.m. – 9 a.m. March-May, September-November (Northern) / March-May, September-November (Southern) 30 Stringfish River (Clifftop) X Large 15,000 4 p.m. – 9 a.m. December-March (Northern) / June-September (Southern) 31 Salmon River (mouth) Large 700 All day September (Northern) / March (Southern) 32 King Salmon River (mouth) Largest 1,800 All day September (Northern) / March (Southern) 33 Mitten Crab River Small 2,000 4 p.m. – 9 a.m. September-November (Northern) / March-May (Southern) 34 Guppy River Smallest 1,300 9 a.m. – 4 p.m. April-November (Northern) / October-May (Southern) 35 Nibble Fish River Smallest 1,500 9 a.m. – 4 p.m. May-September (Northern) / November-March (Southern) 36 Angelfish River Small 3,000 4 p.m. – 9 a.m. May-October (Northern) / November-April (Southern) 37 Betta River Small 2,500 9 a.m. – 4 p.m. May-October (Northern) / November-April (Southern) 38 Neon Tetra River Smallest 500 9 a.m. – 4 p.m. April-November (Northern) / October-May (Southern) 39 Rainbowfish River Smallest 800 9 a.m. – 4 p.m. May-October (Northern) / November-April (Southern) 40 Piranha River Small 2,500 9 a.m. – 4 p.m., 9 p.m. – 4 a.m. June-September (Northern) / December-March (Southern) 41 Arowana River Large 10,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 42 Dorado River X Large 15,000 4 a.m. – 9 p.m. June-September (Northern) / December-March (Southern) 43 Gar Pond Largest 6,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 44 Arapaima River Largest 10,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 45 Saddled Bichir River Large 4,000 9 p.m. – 4 a.m. June-September (Northern) / December-March (Southern) 46 Sturgeon River (mouth) Largest 10,000 All day September-March (Northern) / March-September (Southern) 47 Sea Butterfly Sea Smallest 1,000 All day December-March (Northern) / June-September (Southern) 48 Sea Horse Sea Smallest 1,100 All day April-November (Northern) / October-May (Southern) 49 Clown Fish Sea Smallest 650 All day April-September (Northern) / October-March (Southern) 50 Surgeonfish Sea Small 1,000 All day April-September (Northern) / October-March (Southern) 51 Butterfly Fish Sea Small 1,000 All day April-September (Northern) / October-March (Southern) 52 Napoleonfish Sea Largest 10,000 4 a.m. – 9 p.m. July-August (Northern) / January-February (Southern) 53 Zebra Turkeyfish Sea Medium 500 All day April-November (Northern) / October-May (Southern) 54 Blowfish Sea Medium 5,000 9 p.m. – 4 a.m. November-February (Northern) / May-August (Southern) 55 Puffer Fish Sea Medium 250 All day July-September (Northern) / January-March (Southern) 56 Anchovy Sea Small 200 4 a.m. – 9 p.m. Year-round (Northern and Southern) 57 Horse Mackerel Sea Small 150 All day Year-round (Northern and Southern) 58 Barred Knifejaw Sea Medium 5,000 All day March-November (Northern) / September-May (Southern) 59 Sea Bass Sea X Large 400 All day Year-round (Northern and Southern) 60 Red Snapper Sea Large 3,000 All day Year-round (Northern and Southern) 61 Dab Sea Medium 300 All day October-April (Northern) / April-October (Southern) 62 Olive Flounder Sea Large 800 All day Year-round (Northern and Southern) 63 Squid Sea Medium 500 All day December-August (Northern) / June-February (Southern) 64 Moray Eel Sea Narrow 2,000 All day August-October (Northern) / February-April (Southern) 65 Ribbon Eel Sea Narrow 600 All day June-October (Northern) / December-April (Southern) 66 Tuna Pier Largest 7,000 All day November-April (Northern) / May-October (Southern) 67 Blue Marlin Pier Largest 10,000 All day July-September, November-April (Northern) / January-March, May-November (Southern) 68 Giant Trevally Pier X Large 4,500 All day May-October (Northern) / November-April (Southern) 69 Mahi-mahi Pier X Large 6,000 All day May-October (Northern) / November-April (Southern) 70 Ocean Sunfish Sea Largest (Fin) 4,000 4 a.m. – 9 p.m. July-September (Northern) / January-March (Southern) 71 Ray Sea X Large 3,000 4 a.m. – 9 p.m. August-November (Northern) / February-May (Southern) 72 Saw Shark Sea Largest (Fin) 12,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 73 Hammerhead Shark Sea Largest (Fin) 8,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 74 Great White Shark Sea Largest (Fin) 15,000 4 p.m. – 9 a.m. June-September (Northern) / December-March (Southern) 75 Whale Shark Sea Largest (Fin) 13,000 All day June-September (Northern) / December-March (Southern) 76 Suckerfish Sea Large (Fin) 1,500 All day June-September (Northern) / December-March (Southern) 77 Football Fish Sea Large 2,500 4 p.m. – 9 a.m. November-March (Northern) / May-September (Southern) 78 Oarfish Sea Largest 9,000 All day December-May (Northern) / June-November (Southern) 79 Barreleye Sea Small 15,000 9 p.m. – 4 a.m. Year-round (Northern and Southern) 80 Coelacanth Sea (rainy days) Largest 15,000 All day Year-round (Northern and Southern)

Source: https://www.polygon.com/animal-crossing-new-horizons-switch-acnh-guide/22757894/fish-locations-times-month-day-list-critterpedia