There they are. Blue Grass Guppies. They throw albinos every now and then and reds as often as blues.
But I like em a lot. Glad you do too.
Maybe you can track him down next time he’s selling some of his stock. He’s got lots of strains of quality guppies. Just keep in mind the fancier they get, the less hardy they are. I mean, they’re still guppies. They can adapt to any water as long as there isn’t any ammonia or chlorine and the like. But the second your ammonia is readable they’ll probably crash.