There is no issue with fishing in Judaism as fish are considered a lesser life form. As such, so long as the fish is a kosher species and is killed in a fast and humane manner, it is kosher.
Orthodox Jews keep a strictly kosher home.
Orthodox Jews will generally only eat in Kosher restaurants. Non-Orthodox Jews who keep kosher will generally only eat vegetarian or certain fish in restaurants. __________ For Orthodox Jews who only eat kosher, they will only eat in a restaurant that is certified kosher. Kosher restaurants will display their certification to the public. Meat restaurants will have a moshgiach (kashrut supervisor) on staff during operating hours. Dairy restaurants might also but it's not a requirement, most dairy restaurants will have spot inspections. Some Orthodox Jews will not eat in any restaurant, even if it's certified Kosher.
Orthodox Jews
It doesn't matter what kind of restaurant it is. That's not relevant to what Jews eat. Consider this:Orthodox Jews will not eat in unkosher restaurants at all, unless they find themselves in a place where that is the only choice. In that case, they would typically only eat vegetarian cold food on clean cold plates, such as plain salads without dressing, raw vegetables, fruits and nuts. Some may eat kosher fish, if it is unseasoned. Kosher fish are fish with fins and scales.Non-Orthodox Jews who keep kosher will often eat dairy, vegetarian, and kosher fish even with seasoning. (Kosher fish have fins and scales).Non-Orthodox Jews who don't keep kosher will eat whatever they want.
Orthodox Jews are only allowed to eat kosher foods.
Mostly Orthodox Jews
Orthodox Jews won't buy it.
So Orthodox Jews can eat it.
bagels and lox, and cholent - though not together! Correction: Although bagels and lox and cholent are specific items that Orthodox Jews might eat (assuming they're kosher), that would make for a rather boring and not too nutritious diet. Orthodox Jews can eat anything that is kosher.
Fish and chips can be kosher if it`s made with kosher fish in a kosher kitchen. In fact, it was Portuguese Jews who introduced fried fish to England.
No. Pigs are NOT kosher.
No. That applies mainly to Orthodox and Conservative Jews.