Logic behind Whiscash learning spark?

Question

This confuses me. Do real-life catfish have the ability to create electric charges or something?

Answer 1

There are only some catfish that can generate electricity, and Whiscash is one of them

>Electric catfish
Fish
Electric catfish is the common name for the catfish family Malapteruridae. This family includes two genera, Malapterurus and Paradoxoglanis with 19 species. Wikipedia
Scientific name: Malapteruridae
Higher classification: Catfish
Rank: Family

Source: Googled Electric Catfish