How many different types of guppy fish are there in the world?

It's impossible to give an exact number of guppy types, but here's why:

* Constant Breeding: Guppies are prolific breeders, and hobbyists constantly develop new varieties through selective breeding.

* No Official Classification: Unlike many other species, there's no official scientific classification or registry for guppy varieties.

* Subjective Categories: Guppy types are often categorized based on characteristics like tail shape, fin size, color patterns, and body shape. These categories can be subjective and overlap.

However, you can think of it this way:

* Base Species: The original wild guppy (Poecilia reticulata) is the foundation for all varieties.

* Hundreds of Varieties: There are hundreds of distinct guppy varieties developed through selective breeding.

* Endless Possibilities: With continued breeding, the number of varieties continues to grow.

So, instead of a specific number, think of it as a constantly evolving and ever-growing spectrum of guppy types.