Ok what should I do now? I'm down to one. I don't really want to add anymore and watch more die. Do I just leave this poor guy all alone until he most likely goes too? Would you recommend throwing any meds or anything in just in case for the Betta? So is it really just snails with the betta or is there anything else I can add to liven it up more?
In my experience, snails and betta. Small snails. I had a betta kill a mystery snail once. With a 10g it might work, but why risk It? See if you can get the yellow and black horned Nerite snails. I put 4 in with him, I think. They are still all together.
I used to play with Mr. Luna, one pellet at a time I would let go and he would dive after it. Then go to another section of the tank and repeat. All that room he should be very lively!
Oddly enough, I uncharacteristically -- (i hate to rock the boat when it comes to fish and their companions, a quirk of mine) -- put two tiny Scarlet Badis with a very old Betta that I thought, and probably rightly so, was almost blind. (This is the betta that didn't share his tank with the mystery snail, but was fine with the very small horned nerites).
He could hardly could see his food! Sometimes he would have a pellet on his head, totally clueless. I thought no way he could get those TINY fish. And he couldn't! Until he started on their bloodworm diet!
He is a totally new fish. Maybe he knew it was them and the bloodworms that gave him a better life, or most likely their quickness and size, but I haven't seen any attacks or nipping. Maybe he's grateful, who knows?
He now chases and catches the worms. Color came back. He and one of them seem to be buddies. I firmly believe this is an anomaly and only his age kept him from getting at the tiny fish. I had hiding places for them, but he is now under and around everything!
I hate to tell you that story after advising against anything but snails, please remember he was in bad condition and starting to lose interest in eating, moving, swimming.
Let's see a picture of your little fella!
I don't know what will become of your tetra.
I just lost the last of 16. 13 of them within about 3 days. 2 more in the next 4 days,
And finally, now Squirt, after about 4 more days.