HYBRIDIZATION EXPERIMENTS IN ACHEILOGNATHINE FISHES (CYPRINIDAE, TELEOSTEI): THE HYBRIDS BETWEEN FEMALE ACHEILOGNATHUS LANCEOLATUS AND RHODEUS AMARUS AND MALE ACHEILOGNATHUS HIMANTEGUS

The presence of gametic compatibility on the subspecies, species, and generic level has been demonstrated in a number of bitterling species. In this paper the hybridization between Acheilognathus lanceolatus from Japan × Acheilognathus himantegus from Taiwan and Rhodeus amarus from Holland × A. himantegus has been reported. From both combinations, hybrids have been obtained with the aid of artificial insemination. They showed a male phenotype. Although bright nuptial colors were present in the spawning season, milt production by means of stripping was extremely small or absent. A diagram is presented showing the gametic compatibility between A. himantegus and three other allopatric bitterling species.