I recently have had two different female lyretail anthias have spasmodic episodes and die during feeding (one two nights ago, one tonight). These are fish that I have had since January, and were completely healthy (best I can tell) up until their death. They were fed multiple times a day (mostly frozen PE mysis) Has anyone else encountered a fish dying suddenly, almost like it had a nervous system breakdown or heart attack? I'm not sure how else to describe it.
I dipped the death anthia in freshwater to inspect for flukes, and there were none that came off the fish. I also inspected the gills and chopped the fish up to inspect for possibly worms (but I'm not sure I would even know if saw them or they are visible- I just always hear about anthias being susceptible to worms). Anyone have any theories? I thought possibly a result of collection using cyanide, but I would have thought that would have affected the fish months ago if that was the case.
My tank is a 72" x 24" x 18". Runs about 150 gallons total water volume. 100+ lbs of live rock and sand, Water changes are 10% each week, and my parameters are always consistently 0 ammonia, 0 nitrite, 2.5 ppm nitrate. Calcium 450, Alk 8.0, Magnesium 1300, phosphates 0.01. I run carbon, skimmer, and chaeto macro algae. I have a mixed tank with a few sps but mostly LPS. I have a hippo tang, maroon clown, leopard wrasse, ignitus anthia (2), and had 1 male lyretail and 3 female lyretails up until the death of the two female lyretails. No other fish have shown any issues, and there were / are no aggression issues in the tank. I'd appreciate any theories or thoughts!
I dipped the death anthia in freshwater to inspect for flukes, and there were none that came off the fish. I also inspected the gills and chopped the fish up to inspect for possibly worms (but I'm not sure I would even know if saw them or they are visible- I just always hear about anthias being susceptible to worms). Anyone have any theories? I thought possibly a result of collection using cyanide, but I would have thought that would have affected the fish months ago if that was the case.
My tank is a 72" x 24" x 18". Runs about 150 gallons total water volume. 100+ lbs of live rock and sand, Water changes are 10% each week, and my parameters are always consistently 0 ammonia, 0 nitrite, 2.5 ppm nitrate. Calcium 450, Alk 8.0, Magnesium 1300, phosphates 0.01. I run carbon, skimmer, and chaeto macro algae. I have a mixed tank with a few sps but mostly LPS. I have a hippo tang, maroon clown, leopard wrasse, ignitus anthia (2), and had 1 male lyretail and 3 female lyretails up until the death of the two female lyretails. No other fish have shown any issues, and there were / are no aggression issues in the tank. I'd appreciate any theories or thoughts!