Minecraft wiki entry for Tropical_Fish, associated text: Some varieties of tropical fish don't follow the normal naming system; instead, they reference real-life fish species. In Java Edition, these unique fish are limited to the 22 common varieties. In Bedrock Edition, there are also 22 uniquely-named tropical fish, though they are not all the same as in Java Edition. These uniquely-named tropical fish aren't different from regular tropical fish in terms of design or behavior.