The present invention relates to a vertical tension-type
seahorse rearing structure comprising a bottom base frame that sinks into the lower layer of a rearing tank, an upper float member that generates lift in the rearing water, and a plurality of linear support lines connected between these two elements to apply constant taut vertical tension. The linear support lines are composed of a circular cross-section, a soft elastic
polymer with a
Shore A
hardness of 20 to 60, a convex curved surface with a
surface roughness Ra of 1.6 to 12.5 μm, a
diameter of 1 to 5 mm, and a black or dark green coloring to safely support the
seahorse's
tail grasp. Horizontal spacing rings spaced 80 to 150 mm apart are coupled to the linear support lines to form a three-dimensional grid-type unit rearing
cell, thereby providing individual rearing spaces for multiple seahorses that do not become entangled in both vertical and horizontal directions. Support spacers are provided on the bottom base frame to secure a bottom
discharge channel, and the entire structure can be lifted and cleaned as a single
assembly without draining the rearing water. The low
drag coefficient of the circular cross-section linear support line and the
open structure with a horizontal projected cross-sectional area of 10% or less ensure the uniform passage of degassed rearing water, thereby structurally suppressing the occurrence of
gas bubble disease.