For the last two years my seven tiger barbs have been living with one very passive yellow lab cichlid and a few yo yo loaches. The tank has been very stable: no water quality problems, no illnesses.
Now I have lost four barbs in the last 10 days or so. They are not injured and do not look sick; they have a good appetite in the morning but are dead when I come home in the evening. The water tests fine, although I plan to do another change tomorrow just in case. The other fish are behaving normally.
My only ideas are:
1. My tests are bad, or there's something in the water that I'm not testing for. (However, my other tanks are fine.)
2. I recently started using No More Algae Liquid. Maybe they don't like that.
3. Old age. Seems implausible that they'd all die together, though.
As I said, I'll do another water change tomorrow. I'd welcome any other suggestions. Thanks!
Now I have lost four barbs in the last 10 days or so. They are not injured and do not look sick; they have a good appetite in the morning but are dead when I come home in the evening. The water tests fine, although I plan to do another change tomorrow just in case. The other fish are behaving normally.
My only ideas are:
1. My tests are bad, or there's something in the water that I'm not testing for. (However, my other tanks are fine.)
2. I recently started using No More Algae Liquid. Maybe they don't like that.
3. Old age. Seems implausible that they'd all die together, though.
As I said, I'll do another water change tomorrow. I'd welcome any other suggestions. Thanks!