Breed of Flowerhorn = A more general classification. Could contain several subsets of strains from different countries and breeders. The Four main breeds of flowerhorn are: ZZ, GM, Kamfa, JK (goldenbase)
Strain of Flowerhorn = A more specific subset within a particular breed. Can get as specific as all coming from specific individual parent fish. Strains can also differ by country of origin and breeder.