Hi, Lemon tetras just started dying in my tank. I had 8 healthy adult tetras, I bought another 10 young tetras, after the first night 6 of the new tetras died, the next day the last 4 died, now the 3 third day my adult tetras are dying which I have had for almost a year. The tank is a 50 G. The 3 zebra daninos are fine. Some sort of disease?
Lemon tetra death
- Thread starter Ryan2
- Start date
tanker
Josh Holloway--Be mine!!!
Strange. My initial guess was weak stock, but now your adults are dying?? was there any symtoms?? Did only one adult die?? Any other fish beside the danios??
So you had just 8 tetras in the tank prior to adding the new ones? Couldn't that many additional fish have caused a mini cycle? Have you checked your readings?
I dont have a test kit, there is no market for fish here, I have to order everything from South Africa.
There are only 3 adult lemons left now, I only have two khuli's and 3 daninos, its just the lemons that are dying, one at a time they go hide by the filter then later die, while the other lemons sim around undisturbed then suddenly the next one goes to hide, ect... I put the fish in on sat now only three fish left on wed. I think the tank is big enough for 10 young tetras not to cause sudden death, there is also alot of hornwort floating in the tank.
There are only 3 adult lemons left now, I only have two khuli's and 3 daninos, its just the lemons that are dying, one at a time they go hide by the filter then later die, while the other lemons sim around undisturbed then suddenly the next one goes to hide, ect... I put the fish in on sat now only three fish left on wed. I think the tank is big enough for 10 young tetras not to cause sudden death, there is also alot of hornwort floating in the tank.
I agree with a probable mini-cycle. If you can't get a test kit, you can't go wrong with some extra water changes for a little bit until things get back under control. You could also smell the tank... an amonia smell coming from the water column is a bad sign.
Well, did you check behind the filter for potentially bad things/critters/other that could be there. Do the Lemons look in any way unhealthy? Don't try to make it seem better then it is, that won't help (i don't think you did/are doing that, just being sure). Also, put the fish in a bucket to see if they make it, and to keep the other fish safe from anything that could come from the dead fish.
Fish have stopped dying just 3 tetras left of 18 
Tank is critter free. The lemons showed no signs of illness other than waiting by the filter, the upper eye was bright ruby like it should be and the fins yellow and black, they just died in their tracks. Before I try again I will get hold of a test kit and quarantine tank so his does not happen again
Tank is critter free. The lemons showed no signs of illness other than waiting by the filter, the upper eye was bright ruby like it should be and the fins yellow and black, they just died in their tracks. Before I try again I will get hold of a test kit and quarantine tank so his does not happen again