Idea replies — I've written a hands-on guppy breeding book. Who could help it reach fish keepers?

What about creating a printable breeding log as a companion to the book? Something where aquarists can track parent fish, colours, generations and outcomes. You could give it away to aquarium clubs and breeders with a link back to the book. Since line breeding is one of your main subjects, this would be a practical tool rather than just another promotional flyer.