Black Neon Tetras Sitting On Bottom Of Tank

Hi all

I'm new to the forums and fish keeping in general and would appreciate your thoughts on this!

I've got a 60l tank which I have fishless cycled, using ammonia dosed to 3.0 ppm, the cycle finished with consistent readings over 3 days of 0 ammonia and nitrite.

I then added some zebra danios and continued testing with no issues after 2 weeks I added 6 black neon tetras as I was told these were hardy, or at least more hardy than normal tetras.

I've had these tetras now for 2 weeks and have again continued to test for ammonia, nitrite, nitrate and ph changes and there have been no issues (been doing weekly maintenance and wc)

However when I got up this morning all the neons were on the bottom of the tank and appeared to have lost their black stripe, they were also gasping a little.

I did a test using a test strip which showed no nitrite or nitrate levels, but as I was in a rush I couldn't do a wc right then.

However When I checked back on the fish late morning they were fine, all happily swimming in the middle, colour seemed fine etc.

I tested properly and again 0 ammonia, 0 nitrite ph fine nitrates fine

Any ideas what could have been the problem?

I've done a wc this evening and they still seem fine

Thanks for your help

Lol thanks for the reply Sue

Yes it was first thing and I had just turned lights on so I guess that is what it was! At least it wasn't something serious

This fish keeping is really additive I already want a bigger tank and more fish so will get used to these things I guess

 

  Welcome Russ_Moz

Hey guys

Thanks for all your help and advice 

I haven't got to the "poo" stage yet but it sounds like I will lol

I've got to say the advice on this site is great and has really helped me with the initial start up!