goner

yesterday I saw one of my malaya shrimp lying on its side, and looking very red. Legs twitching every now and then

later in the day it got upright again, but not moving much. It was in the same spot all day. End of the day I nudged it a bit and it didn't dart away but just crawled slowly. I removed it from the tank.

I was able to see the other three malayas, and they look normal

I've had them two years, so not surprised- it's natural end of their lifespan. I guess I should expect the others to go soon, too.
~
Looking back on prior photos this morning, I notice some plants in my tank aren't doing so great, since I took the cories out. Rotalas are poorly, windelov and java ferns look pale. I am not sure if they're missing the extra nutrients from the higher fish load- or if I ought to back to dosing dry ferts.