Unfortunately a post mortum report.
~17" Murray cod, 2 years old, from Wes. I think killed by Malachite Green treatment I've conducted against some stubborn external parasites in both of my 4500 gal tanks. Used the usual ~3-5 ppm dose. Too much of a coincidence - had two cods eating exceptionally well and growing and both perished within a few weeks after MG treatment. This was the first time all the fish in both 4500's had ever seen Malachite Green. I try to turn to medications as a last resort only, especially as harsh as MG is. I've been told Methylene Blue is far milder and its killing spectrum is wider.
The other cod is ~18". The tail is damaged post mortum, likely by our 6 vulture catfishes.
Interesting fish. Don't like each other at all of course. Swim very little, just sit on the bottom in one spot a long time then move to another in 4500 gal. They preferred catfish farm pellets but did take some thawed fish too. Didn't seem to care if they were in 4500 gal or 240 gal (one per tank in the latter case, of course).
Haven't noted much tank mate interaction, even with other perch and bass-looking fish in 4500 gal.
The other:
~17" Murray cod, 2 years old, from Wes. I think killed by Malachite Green treatment I've conducted against some stubborn external parasites in both of my 4500 gal tanks. Used the usual ~3-5 ppm dose. Too much of a coincidence - had two cods eating exceptionally well and growing and both perished within a few weeks after MG treatment. This was the first time all the fish in both 4500's had ever seen Malachite Green. I try to turn to medications as a last resort only, especially as harsh as MG is. I've been told Methylene Blue is far milder and its killing spectrum is wider.
The other cod is ~18". The tail is damaged post mortum, likely by our 6 vulture catfishes.
Interesting fish. Don't like each other at all of course. Swim very little, just sit on the bottom in one spot a long time then move to another in 4500 gal. They preferred catfish farm pellets but did take some thawed fish too. Didn't seem to care if they were in 4500 gal or 240 gal (one per tank in the latter case, of course).
Haven't noted much tank mate interaction, even with other perch and bass-looking fish in 4500 gal.
The other: