Certain tail types dominate.
Veiltail x anything = veiltail that may be shorter longer or wider if bred to anything else
Doubletail x anything = doubletails and genos
Crowntail x anything = shaggy fins, combtails, halfsuns or actual crowntails.
Halfmoon x anything = wider fins, delta, halfmoon
Geno x anything= whatever anything is, or variations like my spawn... Roundtails, deltas and no halfmoons.
Breed for the breed, not for the money; the words any REAL breeder would understand.
You must know nothing in order to know all, for all is nothing and nothing is for all.