Tax collectors were especially hated because they increased their profit by collecting more taxes than their masters actually demanded.
Adam gave names only to animals and birds, apparently avoiding fish entirely. The names of about fifty fish are mentioned in rabbinic literature, but the Torah merely makes a general distinction between clean fish, which Jews are permitted to eat (vertebrate), and unclean (without bones). Clean fish are generally recognized by the presence of fins and scales.
There is a common thread uniting the views of those who think that Jesus signaled Daniel 7 by using the Aramaic bar enash in the middle of Hebrew speech. Anyone who holds this view must assume that Jesus spoke or taught in Hebrew much of the time. That Jesus used Hebrew a significant amount of the time is a sociolinguistic conclusion that has a growing number of supporters in New Testament scholarship, but one that is still a minority opinion.