I am making a game where i want the fish to swim, I made this script for animals on the land and it works but when I added it onto the fish, the fish sink down, can anyone help me make it so the fish can swim like the player in the water?

local pathfindingservice = game:GetService("PathfindingService")
local act = true

local humanoid = script.Parent.Humanoid
local body = script.Parent:FindFirstChild("HumanoidRootPart") or script.Parent:FindFirstChild("Torso")

while wait() do
	if act == true then
		act = false

		math.randomseed(tick()%1*1e6)
		local items = workspace.WaterPathFindingWaypoints:GetChildren()
		local destination = items[math.random(1, #items)]

		local path = pathfindingservice:CreatePath()

		path:ComputeAsync(body.Position, destination.Position)

		local waypoints = path:GetWaypoints()

		for k, waypoint in pairs(waypoints) do
			humanoid:MoveTo(waypoint.Position)
			if waypoint.Action == Enum.PathWaypointAction.Jump then
				humanoid:ChangeState(Enum.HumanoidStateType.Jumping)
			end
			humanoid.MoveToFinished:Wait()
		end
	end
	wait(math.random(2,15))
	act = true
end
Anonymous