Can guppies mate with other fish?

Here's why:

* Different species: Guppies (Poecilia reticulata) are a specific species of fish. To successfully reproduce, fish need to be of the same species.

* Reproductive compatibility: Different species of fish have different reproductive systems and genetic makeup. Their eggs and sperm are not compatible, preventing fertilization.

* Hybrids: While there are some cases of hybrid fish (like the "golden wonder" guppy, which is a hybrid of the guppy and a swordtail), these are usually rare and often infertile.

So, while guppies are known for their social nature and can live peacefully with other fish, they can only reproduce with other guppies.