-- original by wulfsdad (http://forum.minetest.net/viewtopic.php?id=4375)
-- edited version by Mossmanikin (https://forum.minetest.net/viewtopic.php?id=6480)
-- License (code & textures):               CC-BY-SA (3.0)
-- May contain leftover code from:          animal_clownfish, animal_fish_blue_white, stoneage
