yeah all the things the dels are doing are natural. When you say when they open their mouths real big when breathing does it almost look like a yawn? if so thats natural to.....IMO it's pretty cool as well
as long as they are ok and not acting weird i wouldn't worry about pics if you want to (if have a youtube account) post a youtube video on youtube and tell us what you labeled the video as so we can search and watch it.
Thanks! Mfk is way better than he garbage I was using before. Yeah I regret putting the kenyi and the other bichir in too see how long he kept them. Is over eating a problem for delhezi?