Enchi, spider and lesser are codominant mutant genes. Even mated to a normal female, the chances are 7 out of 8 that a given baby will not be a normal. You shouldn't mate him to a spider or spider combination (such as bumblebee) female. Avoiding that mating means avoiding the chance of getting any embryos with a pair of spider genes (lethal). A mojave would be a good choice if you want to get some blue-eyed leuchistics. I like pinstripes and pastels, but you can mate him to any female you like that has one or more codominant mutant genes.