Is This Finrot Or Bullying Another Disease Altogether?

[DaveyG]

Hi all

I posted yesterday about one of my guppies tails being completely shredded:

and he is now sadly dead. I woke this morning to see this:

His tail was perfect yesterday before I went to bed so please someone tell me what it is? Is it finrot or another disease or simply bullying?

In my 200L tank I have (now):

4 male guppies (was 7 a couple of days ago)
2 female guppies (was 5 a couple of days ago - the problems started when I added the females)
6 blue tetras
6 mollies
3 cherry barbs
5 platies
2 leopard danios

All the other fish look fine at the moment. All the male guppies have died with their tails shredded/damaged but the females just died seemingly without any damage. Now that I have females in there are the male guppies simply starting to kill each other? Or is this a disease?

Please help, I don't want to lose any more guppies!

Ammonia: 0
Nitrite: 0
Nitrate: 20
PH: 8

 

[glolite]

Anti-bacterial meds as Wilder said or try eSHa 2000 which is for bacterial infections, finrot and fungus. Have had some success with this myself.
Sorry about your poor guppies. Try to medicate as soon as possible to protect the others.
It's well worth getting a small tank to keep for isolating new fish for a couple of weeks, only needs to be a cheap weeny 5g or so.

 

[DaveyG]

Anti-bacterial meds as Wilder said or try eSHa 2000 which is for bacterial infections, finrot and fungus. Have had some success with this myself.
Sorry about your poor guppies. Try to medicate as soon as possible to protect the others.
It's well worth getting a small tank to keep for isolating new fish for a couple of weeks, only needs to be a cheap weeny 5g or so.

I lost all except 2 guppies now, and those 2 seem absolutely fine which is strange. I am treating with an anti fungus/finrot medication.

All my fish seem more than happy (including the last 2 guppies) and none of them are showing any of the signs the other guppies did. So, this seems to be a guppy-only disease? Is there such a thing?

Do I need to now do a 100% water change before putting more guppies in or will the medication have removed anything harmful? Obviously I am not talking about adding any fish immediately, I will leave it for 2 weeks before even thinking about it but want to know what the process should be for adding new fish to a recently (potentially) diseased tank...

Thanks in advance for any help!

 

[glolite]

No not 100% ever. Usually 40 % change but it should tell you on the medication packet. Some treatments don't require a water change but most do and if you add a carbon sponge to your filter it will remove any remaining medication. Observe remaining fish for a few weeks incase of further disease caused by stress, like ich. When you're happy things have settled you can start to restock.

Good luck