Thx for all you help here guys, but the plot thickens!!
Indeed, the fins seem to be growing back on the Rainbows, but last week I noticed the Betta has now had half its beautiful fins removed! It nearly looks like a female it's that severe! I've also lost one of the neons - all 8 had no sign of fins nipping and I presumed wouldn't be targets as they don't have longer fins so dunno why all of a sudden one was attacked, I literally saw his wee body floating around, eyes removed, the lot! I just want a happy taking and Not sure why. I've mentioned the stock in this thread, but for ease/ref, here it is:
35L wall tank containing
1x Female Betta
8 (now 7!) x Tetra Neons
5x Rainbow Werneris
3x Cory Doras
2x Algae Shrimp
2x small red shrimp
1 large snail + a few babies hatched from eggs plants
Now this should be a happy tank right??? As mentioned, I had to get rid of a Gourami as him and the Betta were fighting, the G was attacking everything. Was assured what I now have will be fine!
Heeeeelp
Cheers