Fighting fish species in the genus Betta are found in several Southeast Asian countries.
Depending on the mode of paternal care for fertilized eggs and hatchlings, various species
of the betta fish are classified as mouth brooders or nest builders whose members in turn
have been grouped according to their similarities mainly in morphology. The mouth
brooders as well as some nest builders involved in the present study include fishes
discovered and identified subsequent to previous reports on species groupings and their …