cause they are hungry.
put them in a separate tank
Yes, if you separate them for 1 week in a tank with a clear divider.
If the tank is large enough place a separator in the tank if not move them apart. 1 fish one tank.
One goldfish chasing (or in this case biting) another fishes rear is how goldfish flirt, however this could also be a display of aggression towards the other fish.
If there are other fish in the tank, then it could be because the other fish are biting that one. i suggest u keep the fish in separate tanks.
separate them
Yes, dogs often play by gently biting each other's necks as a form of playful interaction and social bonding.
When fish are biting
They compete for territory, killing the other fish would just make it die, biting the fin lets it suffer
Yes, dogs often engage in play biting on the neck during their interactions with each other as a form of social play and communication.
Yes, dogs playing together may engage in behavior such as playfully biting each other's necks as a form of social interaction and play.
To effectively address and prevent twins from biting each other, parents can implement strategies such as closely monitoring their interactions, teaching them alternative ways to express their emotions, and providing positive reinforcement for good behavior. Additionally, setting clear boundaries and consistently enforcing consequences for biting can help discourage this behavior. Communication with the twins about the importance of treating each other with kindness and respect is also key in preventing biting incidents.