> in at least 44 species That's something quite systemic. Are these fish that use magnetism to navigate? Like sharks do? There's a solar storm this week. Seem

> in at least 44 species That's something quite systemic. Are these fish that use magnetism to navigate? Like sharks do? There's a solar storm this week. Seems unlikely. Measuring LF EMF would be a good start. Maybe a HV cable? If it's not a neurotoxin it might be a parasite like Diplostomum pseudospathaceum that is inter-species and causes the fish to get eaten more easily [0]. [0] https://www.newscientist.com/article/2129880-parasite-living-inside-fish-eyeball-controls-its-behaviour/ https://www.newscientist.com/article/2129880-parasite-living...