At the end of October, we lost all the new fish we put into our 72 gal bowfront
The tank is now being fed, but is going to be fallow for 8 weeks. Loss of fish was possibly due to velvet, internal parasites, or external parasites. We really don't know which, and it could be all of the above.
Had the flashlights out tonight and happened to see a strange looking bug swimming about near the front glass. Looked like some kind of isopod, but I couldn't say for sure what the heck it was. Caught it with the turkey baster and put it in a cup. Kept looking in the tank and found two more on the sandbed, one of which had just emerged from the sand. All three are now in the cup pending ID.
Here are the best photos of these bugs. They are about 1/8th of an inch in length. All three are walking about on the bottom of the cup and sometimes swimming around.
Any idea if they are parasitic or just natural fauna to be found in a healthy tank?
TIA.