One more dead neon with it's belly eaten, and one missing when I got in. Had a rake through one of the plants, and found the missing one (not the original missing one that still hasn't been found). It was barely able to twitch it's bent tail, but just blowing where the current took it, still breathing but pretty much paralysed. I scooped it up in the net and it didn't have the strength to flip at all. I put it out of it's misery.
I then noticed one of the platys missing - she'd been fat and pregnant, but I found her dead under the mopani wood, looking very skinny and had a little fluffy white stuff on her. She was by far the greediest fish in the tank, she'd probably eaten a bit of the dead neon.
Everything else is very colourful and active. I'll continue with the meds.
Is it usually worth adding a small amount of Pimafix and Melafix into the tank the day before new additions, to kil anything they might bring with them, or will it be too much of a shock to the new fish?
I'm going to do a big change in water today, then again tomorrow (40% each day - so there should only be 36% of the original water left). I'm very regular with my changes anyway.
I'm hoping my recent losses have been NTD and a secondary Columnaris kicking in, at least that would make sense. Hopefully the Platy's death is from eating dead neon rather than something else lurking undetected.