Is it a sin to look at the photo of a painting which depicts an imaginary woman in nude?

What is the ruling on concluding a temporary marriage and having sexual intercourse with a non-Muslim girl who is not from the people of the book? Is there any way to make such relationship lawful?

What is the ruling on buying, selling and eating sturgeon?

What is the ruling for a woman dancing for her husband in the wedding where other women can see her?

What is the ruling on looking at a non-mahram woman?

In some restaurants, for example McDonald’s, where fish is served to customers, it is not known whether the fish is of the type that has scales. In such a case, is there any problem in eating the fish or not?