G'day Nomad,
Thank you for your question.
Fish aren't mammals. As for fish on Friday, it was seen as a form of fasting and that is why Christians should avoid meat on Friday because that is the day that Jesus was believed to have been crucified. Back in the early days, fasting was also on Wednesday because that is the day that Jesus was betrayed. Meat was a luxury good in the days of early Christians so that is why it was chosen.
Regards
Thank you for your question.
Fish aren't mammals. As for fish on Friday, it was seen as a form of fasting and that is why Christians should avoid meat on Friday because that is the day that Jesus was believed to have been crucified. Back in the early days, fasting was also on Wednesday because that is the day that Jesus was betrayed. Meat was a luxury good in the days of early Christians so that is why it was chosen.
Regards