My fish are not well

Three or four of my blacknosed dace are exhibiting what looks to be siezures and arching their bodies while swimming erratically. One creek chub that I can see is exhibiting the same symptoms and I just noticed two darters doing it as well. I had this happen a long time ago to some big, beautiful black ruby barbs and they all died I am able to notice what look like bruises under the creek chub's skin. There is a similar mark on a tesselated darter below and aft of the dorsal fin and becaause their flesh is kind of translucent I can see that this one looks like a burst blood vessel within the "meat" of the tail...

Does anyone know what this could be? Are these symtpoms of VHS?

Check your water parameters. I'm guessing high ammonia content.

I think that you are right. I did some reading and the symptoms match-up pretty good. I did not cycle the tank long enough before adding more than a couple fish. Thanks.

I think that you are right. I did some reading and the symptoms match-up pretty good. I did not cycle the tank long enough before adding more than a couple fish. Thanks.

Scott, have you ever tried fishless cycling? Best thing since sliced bread.

http://aquaticpredat...?showtopic=4931