Fish are a big part of Animal Crossing: New Horizons. They can be caught and donated to the museum, much to the delight of Blathers, or sold. Many of them are very profitable and can help players earn lots of bells. Fishing is one of the best ways to make bells in New Horizons.Fish come and go on a month-to-month basis, just like all critters. The fish that spawn differ in the Northern and Southern Hemispheres. Here's what fish players can expect to see in January and which fish are no longer available.Fish spawns in January for Animal Crossing: New Horizons playersIn the Northern Hemisphere, fish that spawned in December will remain even in January for the Northern Hemisphere Animal Crossing players.On the other hand, Southern Hemisphere Animal Crossing players will experience a change in fish spawns during January. The fish that will be arriving or leaving include the following:Arriving:Sweetfish- 900 bellsNapoleonfish- 10,000 bellsPuffer fish- 250 bellsBlue marlin- 10,000 bellsOcean sunfish- 4,000 bellsLeaving:Tadpole- 100 bellsJelly Super@_Jelly_SuperLove how this tadpole vibes to dj k.k. #AnimalCrossing #ACNH #NintendoSwitch5:20 AM · Apr 15, 2020175Love how this tadpole vibes to dj k.k. #AnimalCrossing #ACNH #NintendoSwitch https://t.co/3nGvSRmUBFIn the Northern Hemisphere, there are several fish that can be sold for a lot of bells.Koi- 4,000 bellsRanchu goldfish- 4,500 bellsStringfish- 15,000 bellsSturgeon- 10,000 bellsBlowfish- 5,000 bellsRed snapper- 3,000 bellsTuna- 7,000 bellsBlue marlin- 10,000 bellsFootball fish- 2,500 bellsOarfish- 9,000 bellsBarreleye- 15,000 bellsSkyla@SkylaoceanYES! BARRELEYE! #AnimalCrossing #ACNH #NintendoSwitch7:56 AM · Jul 6, 202131YES! BARRELEYE! #AnimalCrossing #ACNH #NintendoSwitch https://t.co/6xIOHfvaqJThe same can be said for the Southern Hemisphere, wherein several fish can fetch a high price for Animal Crossing players.Koi- 4,000 bellsRanchu goldfish- 4,500 bellsSnapping turtle- 5,000 bellsGiant snakehead- 5,500 bellsAngelfish- 3,000 bellsBetta- 2,500 bellsPiranha- 2,500 bellsArowana- 10,000 bellsDorado- 15,000 bellsGar- 6,000 bellsArapaima- 10,000 bellsSaddled bichir- 4,000 bellsNapoleonfish- 10,000 bellsBarred knifejaw- 5,000 bellsRed snapper- 3,000 bellsBlue marlin- 10,000 bellsGiant trevally- 4,500 bellsMahi-mahi- 6,000 bellsOcean sunfish- 4,000 bellsSaw shark- 12,000 bellsHammerhead shark- 8,000 bellsGreat white shark- 15,000 bellsWhale shark- 13,000 bellsBarreleye- 15,000 bellsCoelacanth- 15,000 bellsWhale sharks can get a lot of bells (Image via Nintendo)January could be a very profitable month for Animal Crossing players, regardless of the hemisphere.