Awe
Awe is an emotion comparable to wonder but less joyous, and more fearful or respectful. A person may feel wonder or joy while seeing a large double rainbow, but typically a person does not feel in awe of a rainbow. In general awe is directed at objects considered to be more powerful than the subject, such as the breaking of huge waves on the base of a rocky cliff, or the thundering roar of a massive waterfall. The Great Pyramid of Giza, the Grand Canyon, or the vastness of open space in the cosmos are all places or concepts which would typically inspire awe...
or as in this case... 3dees tank and fish.