Maybe autopsy next time with a fresh kill. You may notice something obvious, like a blockage and/or some sign of indigestion.
RD. wouldn't feed them even if he got them for free, or so he wrote to me. So it's relativeYou seem to be offering a pretty good farm pellet but those tight bellies look suspicious to me. Interesting point in regard to pH though.
...Water's clean. No NH3, no NO2, NO3 is 5 ppm. Continuous water change...
So I assume this is a good reason to give them another try once you have things situated?A major correction.
Today I've found out I've been erring pretty badly on my continuous water change. The nitrates are ~100 ppm. The number of fish and their size increased a lot along with the feeding but I forgot to keep checking nitrates for at least 6 months.
Even if this wasn't the main cause of the lancer's passing, it certainly didn't help.
There's a difference between being unaware and being ignorant, you were simply unaware of the conditions that mkajority if your fish adapted to tolerating, it's not like you were ignorant and knew nothing of nitrates and the nitrogen cycle etc. If you look on the bright side, it is better losing them them and fixing it than them tolerating it like everyone else and conditions continued to get worse as fish grew and feeding portions along side them, and then things get to a point where no one can tolerate it and you lose everyone. So thank the lancer! They deserve another try! LolIDK yet.
The three prior ones perished in 5-ppm nitrate water which nevertheless could have been too soft and/or unstable with respect to pH.
No clean outcome yet in this experiment, you are right. I act like I know something but I am still a novice when it comes to counting my own lapses and how they occur.