Angelfish behavior haven’t seen before

[Chere]

My angelfish have bread many times and I’ve never seen them do anything like this. Although it kind of seems like this may be a meeting ritual. I tried to post a couple of photos of what they’re doing. But it looks like they are fighting with their mouths

 

[TClare]

They probably are fighting if they are lip-locking. Pairs can have disagreements, or break up altogether, keep an eye on them in case fighting becomes more serious.

 

[Itiwhetu]

They do this to test their strength against each other to make sure that they are suited to mate. This can get wild at times, just let them do their thing and sort it out.