First of all: I find your "watermark" severely distracting, diminishes the fun of viewing your photos considerably...
Further: well done on the aquarium shot, it is NOT easy to get the fish into focus like this through the thick glass, as often the light situation isn't the most favourable. If this was your home aquarium: did you set up your tripod for this photo?
Night photography with smoke that turned into "cotton wool" because of the long exposure, and an aperture chosen that was small enough to turn the one brighter light source into a star (unlike a large bright blob, which happens when your aperture is wide open, I guess you know that already). However, I feel there is far too much empty space here and the factory as such did not offer you enough lights to really "jump out at the viewer".
I simply do not understand that last one here.