I took a look at one of my females and after fighting with her for an a few minutes I feel safe saying she has the pore. Im not sure about the others I didnt check them yet. Luckily I have some lucipinnis to be able to compare them to and it was definitely different. I used a little flash list to see if there was a hole or just a hollow and I'm pretty sure it was a hole as it seem to go fairly deep. No way I can get a pic of it though.
Thanks for checking...that is positive proof and a bit of reassurance that the information we give out is correct...it is a tough spot to inspect as you found out and hats off to you for winning the wrestling match and bonus for having luci's to compare with.
If I remember correctly the spawnings of true petricola that Richard B mentions is the only "for sure" spawning of petricola that we know of, at least no one has stepped up with positively ID'd fish that have been spawned.
So I hope that it also will work out for yourself. Make sure you keep us posted.
Its was certainly a fight. But I'm happy to know she is a true petricola. I check my second female last night and she was much more willing than the first. She too has the pore. I have one more to check. I'll let you know how that goes.
I have bred S. petricola and S. lucipinnis. At the moment I have youngsters from both species. They spawn very similar. Thats my way in the community tank:
It works fine with both species, but my S. lucipinnis also use the plants and the corners of the tank.
If a lot of the eggs are unfertilised, you get problems with fungus. Unfertilised eggs are mostly a problem of wrong food for the parents. Feed them with mosquito larvae only and you will have no problems with unfertilised eggs. Then the eggs will hatch faster as the fungus grow up.