Jesus the carnivore

According to the Gospels Jesus ate fish. 

We would know if Jesus had been a vegetarian and if he was not no Christian need be.

A similar point can be made about other things. If Jesus had been the only first century rabbi to approve of homosexual acts this certainly would have been recorded in the Gospels and known to the apostles. Norman Tebbit, a very clever debater, made that point.

The same goes for pacifism, capital punishment, revolutionary socialism and countless other things.

Vegetarianism and veganism are supererogatory mercies. Not required. Like giving away all your property.