Hi,
Back in March my wife decided to buy some fish for the kids. Under the recommendation of the Aquarium shop, she bought 6 Zebra Danios and 6 Mountain Minnows in a 21 litre tank. They're all bored of the fish now and as normally happens I'm left looking after them.
I do a 1/5th water change every week, dechlorinate the fresh water beforehand overnight and add cycle once a week (as I was told).
In the last month I have had 2 of the minnows die. They were struggling to swim in any direction and looked to me like maybe their swim bladder had gone (if that is even possible).
Today, one of the larger danios has died. I assumed it was pregnant as it's belly was large (had been for a while), then two days ago it had bright red marks on its belly and would swim very rapidly around the tank and then rest on the bottom not moving.
From reading on here it looks to me like it oculd be Dropsy, Columnis or Gill disease.
If anyone could point me in the right direction before the rest start dieing. Thanks
Back in March my wife decided to buy some fish for the kids. Under the recommendation of the Aquarium shop, she bought 6 Zebra Danios and 6 Mountain Minnows in a 21 litre tank. They're all bored of the fish now and as normally happens I'm left looking after them.
I do a 1/5th water change every week, dechlorinate the fresh water beforehand overnight and add cycle once a week (as I was told).
In the last month I have had 2 of the minnows die. They were struggling to swim in any direction and looked to me like maybe their swim bladder had gone (if that is even possible).
Today, one of the larger danios has died. I assumed it was pregnant as it's belly was large (had been for a while), then two days ago it had bright red marks on its belly and would swim very rapidly around the tank and then rest on the bottom not moving.
From reading on here it looks to me like it oculd be Dropsy, Columnis or Gill disease.
If anyone could point me in the right direction before the rest start dieing. Thanks
