Det gör jag gärna... hittade länken på texten här på SG Moray eels are the escape artists of the fish world; they can exit through any hole in the cover of your aquarium. Adult eels can push against the top to open the cover. To prevent any Houdini-like escapes, I recommend covering your tank and weighing the cover down. A tight fitting top that is locked or clipped into place is mandatory. Just be sure to allow for the fact that if you do decide on a tight fitting top and you are using an air stone or under gravel filter, that carbon dioxide may build up in this upper air space and this buildup needs to be frequently removed. If you do happen to find your moray has escaped and has partially dried on the floor, don't give up hope, moray eels secrete a thick slime layer that will protect them for a few hours outside of water. Some juvenile morays and the dwarf morays have been known to swim down under gravel lift tubes and get beneath under gravel plates (Michael, 1998), so if you have an under gravel filtration system, it should have screens over all the intakes. http://www.reefkeeping.com/issues/2002-12/fm/index.php