Many egg laying cichlids will attack, but they don't usually hurt because their crushing teeth are deep inside their throat. I won't try that with pirahna though!
Mbuna has sharp teeth on their lips and they can hurt, but mouth brooder don't have a permanent nest to protect and they rarely ever attack human hand.
Mbuna has sharp teeth on their lips and they can hurt, but mouth brooder don't have a permanent nest to protect and they rarely ever attack human hand.