Look, all I know about crappies is that they are fun to catch and I don't want them in my hoped-for pond.

However, when I saw the pic of the fungus, I couldn't help but think about what Bob Lusk told me: Salt is deliberately added to the water when transporting live fish because it seems to keep them healthier.

Wonder if deliberately increasing salt content, at least moderately, might have helped?

7ac 2015 CNBG RES FHM 2016 TP FLMB 2017 NLMB GSH L 2018 TP & 70 HSB PK 2019 TP RBT 2020 TFS TP 25 HSB 250 F1,L,RBT -206 2021 TFS TP GSH L,-312 2022 GSH TP CR TFS RBT -234, 2023 BG TP TFS NLMB, -160