Has he been in same spot for a given time? Sometimes they will do odd things such as seen above to reach for light. I am not an expert on nems, but I have a few. @4FordFamily what do you think? Really cool nem though I am slightly jealous! I have a few RBTA's!
he has been in that spot for about 3-4 months ever since i put him in the tank. He will take up the whole hole where he is. mouth is open and oval and open but not gaping.
haha yeah im not worried he does it sometimes. even one time his tentacles were pulsing witch was kinda cool. just really curious on what and why he does it. i was also curious if my female clown and the white nem crab almost fighting over him had something to do with it. What do they do when they are splitting are there any signs to look for ive been keeping him really happy to try to get him to split
Ive read that BTA's will "Deflate" when they defecate or sense a change in the water. Your looks great, color is beautiful imo. If anything it was just pooping lol, because if it was a water problem you would see it in other places in the tank with other signs.