Turtles can be either put on a lead or led away with seagrass. They spawn directly on sand blocks where the light is bright enough, sometimes in small groups.

They usually spawn on beaches with the exception of snowy beaches and stony shores. Turtles aren’t exactly fish, but they can still be a fun addition to an aquarium if you can get a hold of them. This will fill your bucket with water and fish. Swim up to your desired fish with an empty bucket in hand and right click. Regardless of differences, all fish are very easy to catch. In doing so they inflict poison damage for 5 seconds.

Unlike other types of fish, pufferfish can protect themselves by inflating and stinging the player when approached.

Pufferfish can only be found in warm ocean variants, those being lukewarm ocean, deep lukewarm ocean, and warm ocean biomes. In oceans they will only spawn at a depth of 13 blocks or lower, usually at least 24 blocks away from the player. Tropical fish can be found in warm ocean variants or lush caves, appearing in schools of 8. You’re most likely going to have to travel by boat into deeper waters. With tropical fish and pufferfish it’s a different story. They can be found in virtually all types of water as long as they are deep enough. If you’re looking for salmon or cod you’re in luck, as these are the most common fish in the game. If you want a very large aquarium you can also raise breed turtles. In Minecraft you can put any fish you see inside a bucket to take back to your home salmon, cod, tropical fish, and even pufferfish. Depending on the type of aquatic animal you want in your aquarium, there’s many places to look.

Modern minecraft fish tank