Vertical room (metres) a fish needs from the bed and from the surface: margin plus half its
largest body/tail height and what pitching adds, for the largest fish of the species. Keeping
fish centres this far inside the water keeps every fin under the surface.
Vertical room (metres) a fish needs from the bed and from the surface:
marginplus half its largest body/tail height and what pitching adds, for the largest fish of the species. Keeping fish centres this far inside the water keeps every fin under the surface.