Some oddballs can do it even better, such as the 'Walking catfish' and the 'Lungfish' amongst others.
Nice little article here, http://www.planetcatfish.com/cotm/2000_06.php
on the Walking catfish.
thats a new one. I heard wheather loch had so much extra slime that thy shead there skin. My 7" dojo is the reason there is pieses of skin cloging my filter. Anyway, they can prouduse even more of a mucus-slime coat when they jump tokeep them moist. that one of the reasons why they are considered indestructable. snakeheads have such an advaced labrinth that when they were legal they would me able to escape frome the tank and traval from lakes or rivers to where ever it wants, destoying the ecosystem, which is why they are illegal.
Last year I had a red velvet sword who did that and wasn't so lucky. The only thing that makes this story even somewhat interesting is that I found her this summer when we moved and saw something red and desiccated wedged in a part of the stand I couldn't see until I had it in a bearhug.
I really have to suggest a better cover. One of these times, you won't catch it and he'll die or be too far gone to save. It's really a horrible way to die. The reason it happened to me was I had a tank problem and the betta had to be removed temporarily. Well...add a fat dumb clumsy cat to a flimsy lid and you have an uncovered tank.
Ohhh man that post will p**s some people off. Better hope some of these people do not know where you live of your life may be in danger. If you do not want him why not give him to somebody who wants one?