What does the high back of arowana mean?

Arowana and Gaobei are both fish.

Arowana (arowana) is also known as whitebait, whitebait and arowana. Arowana lives in Southeast Asia of Asia, originating from the Amazon River basin in South America, the Nile River basin in Africa, and reaching Australia and Papua New Guinea. Silver dragons are generally found in ponds of tributaries and submerged bushes on the shore, and sometimes in water environment with floating grass. Arowana, one of the main ornamental fish in China, has successfully propagated in the south after flowing into China, and it is also quite popular in Asia because of the demand of geomantic omen.

High-backed red-tailed golden dragon is made of red-tailed golden dragon as the main fish and other kinds of arowana.