Red bump on Siamese Algae Eater's mouth??

[courtneylm]

Any idea what this could be? I just noticed it today and would like to know if I should put him in the hospital tank. He's very hard to catch so I don't want to do it if it's not necessary so I don't stress him. None of the other fish have it and he is acting normally otherwise, I just fed them and he was chasing the food like normal.

Parameters are:
Ammonia 0
Nitrite .25
Nitrate 40
pH 6.4
Temp 78

I included a video as well as pictures because he is very hard to photograph. Thanks for any advice you're able to provide!

Here's a better photo and video I was just able to get

 

[Mudminnow]

I'm no expert in fish diseases, but I've kept SAEs for years. The red bump accompanied by the odd way your fish keeps its mouth open is concerning. It almost seems like an injury.

Regarding placing your fish in a hospital tank or not...I'm not sure. If you think it has a disease, it's not a bad idea. Otherwise, it may be best to just keep it in the main tank to heal...less stress that way.

 

[courtneylm]

I'm no expert in fish diseases, but I've kept SAEs for years. The red bump accompanied by the odd way your fish keeps its mouth open is concerning. It almost seems like an injury.

Regarding placing your fish in a hospital tank or not...I'm not sure. If you think it has a disease, it's not a bad idea. Otherwise, it may be best to just keep it in the main tank to heal...less stress that way.

I think you may be right about it being an injury. It looks a little less pronounced today than it did yesterday. I'm not sure how he could have gotten it, maybe got too close to one of the upside down catfish's barbs? With all the driftwood and plants in my tank I think I'll just leave him and monitor. He was hard to catch when there was nothing in the way so I can't imagine trying to catch him now and all the stress it will cause. This is my first time having an SAE but I did notice he seemed to be opening his mouth different than normal as well. Thank you for the insight!