To successfully catch different types of fish in Animal Crossing: New Horizons, players should use special lures or bait that correspond with each species. For instance, Bettas typically require insects or small fishes as bait to attract them; Blowfish require special lures or worms/shrimp; Bluegills require insects/small fishes as bait; Pufferfish also require special lures or worms/shrimp as bait; Horse Mackerels need insects or small fishes as bait to attract them; Sea Butterflies need special lures or worms/shrimp for successful catches; Coelacanths usually require special lures or bugs/small fishes for successful catches; and Koi also need insects or shrimp for successful catches.