A bucket of tropical fish is a unique item that players will need to breed a specific type of mob in Minecraft, and players can make it with an iron bucket and tropical fish.
However, to make a bucket full of tropical fish, first make an iron bucket using three iron ingots.
You will need to refill the bucket with water after that. This is because tropical fish cannot survive without water.
Once you have completed this step, you can move on to finding the tropical fish. If you don’t know, tropical fish can be found in the ocean. You can make a bucket full with tropical fish by going over to the ocean now.
Before you dive in the water, you should bring water breathing pills or a helmet that can be enchanted with respiratory. You will be diving for long periods of times to catch the fish.
Once you have this information, you can start to collect tropical fish.
A side note: You can buy buckets of tropical fish from traveling merchants for five emeralds.