
Phenotypes of wild-type (+/+) and Da homozygote (Da −/Da −) adult fishes. (A) A wild-type (+/+) adult female (HNI strain). It has normal dorsal and caudal fins. Many bright guanophores are found on the belly. (B) A Da −/Da − homozygote adult male. The dorsal fin is similar in shape to the anal fin and the caudal fin is rhombic. Many bright iridophores are found not only on the belly but also in the dorsal region of the trunk.











