Test system for simulating whole-river-reach habitat of fishes

The invention discloses a fish whole-river-reach habitat simulation test system which comprises a rectangular water tank, the water tank is made of transparent materials, a plurality of partition plates are arranged in the water tank to divide the water tank into a plurality of tank bodies, and the tank bodies are a water power circulation tank, a field habitat tank, a fish temporary rearing tank and a water quality treatment tank in sequence in the water flow direction; the water power circulating pool enters the field habitat pool through an overflow weir; a first communication port is formed in a partition plate corresponding to the fish temporary rearing pond and the field habitat pond, and a grating door is arranged at the first communication port; partition plates corresponding to the water quality treatment pond and the fish temporary rearing pond are arranged in a hollowed-out manner; a water pump is arranged in the water power circulating pool so as to pump water in the water quality treatment pool i