there is no 100% way ,unless you whitness the spawning unfortunatly .
me and uli both noticed our males had higher dorsal fins than the females , but pascal noticed that his where the same size
unfortunatly only way to secure a pair is to let them find them selves from a group
me and uli both noticed our males had higher dorsal fins than the females , but pascal noticed that his where the same size
unfortunatly only way to secure a pair is to let them find them selves from a group