Corydoras Nearly Dead?!

[Moolly]

So I bought 4 new Corys (pretty sure the shop advertised them as Corydoras sp. columbia). And the past few days one in particular has been looking off - paler than normal, and noticeably smaller in size than the others.

Yesterday when I looked in the tank it looked dead - was upside down on the bottom of the tank, so I went to fish it out, then it turned the right way up and swam off, but it's looking increasingly worse. I have also noticed that its eyes are significantly sunken in and there are small red flecks on its tummy (not sure if they were there before) I'm 99% sure that it's going to die but if anyone has any suggestions to help strengthen that 1% I would be so grateful!

Oh, I'm also currently treating the entire tank for white spot at the moment with Melafix, so maybe that's the issue? (although I can't actually see any signs of it on him)

 

[fluttermoth]

How big is the tank, how long has it been set up and is it cycled?

Have you tested the water and/or done a large water change?

to the forum, btw.

 

[Moolly]

Tank is 60l, is cycled and has been set up about 6 months now. Haven't done any water tests (have run out at the moment), and the most recent large water change (about 50-60%) was about a month ago.

Original fish has died now However I'm keeping an eye on another one, he looks fine physically and still eats, however he has started to isolate himself and doesn't move as much - I hope I'm just overreacting on this occasion!!

 

[leighton_87]

What other fish are in the tank? A 60l isn't the biggest tank and could be quickly overstocked.

Also the majority of people on here would reccommend a 20-30% water change once a week so 50-60% about a month ago is probably not frequent enough - especially of your stocking is on the high side.

The only way to be sure is to get a new test kit and see what the results are.