Reflection

The last picture (of the fishbowl) was taken at around 10pm.  I aimed a desk lamp at it to cast the shadow on the wall. in the right-hand corner you can see the fish swimming around and, on the left, the shadow of the bowl and water. The moving water and convex/sphericl shape of the bowl made for an interesting texture to the shadow as well as a reflection of light. 

The line of the top of the bookshelf creates a line that separates the fish from the shadow of the bowl. The dark tone of the picture adds an eerie mood to the picture.