Tropical Fish Forum

Tropical Fish Keeping Help and Advice => Fish Health => Topic started by: Littlefish on October 11, 2016, 08:07:15 PM

Title: Nipping tiger barbs
Post by: Littlefish on October 11, 2016, 08:07:15 PM
I seem to be having a spate of non-emergengy issues with my fish at the moment, so I'm asking for advice again.

After upgrading the dwarf puffers I used the spare 125L tank for the tiger barbs. Initially they seemed very happy with it, and the extra fish. I currently have 19 tiger barbs (one passed shortly after purchase/addition), a mix of standard and green, in a planted species only tank. It has quite a strong flow at the surface and the majority of them shoal together swimming against the flow.
Today I have noticed that 2 of the standard tiger barbs have nipped tails.
I understand the heirarchy situation, but during research thought that the 125L/80cm tank would give them plenty of room, and that a large number of them (but only 71% stocked) would dissipate any agression.
Should I remove the 2 with nipped tails to give them time to recover?
If so, should I put them in seperate tanks to avoid them nipping each other, or can they go into the same hospital tank (70L, 60cm)?
What should I do with the main tank to avoid this problem again? Should I include more plants, or have more open swimming space? Should I put more decor in the tank to entertain them, like with the puffers?
Water parameters as tested on Saturday (pre-water change) are 0, 0, 40, as usual.
A few weeks ago I was telling one of the guys at the LFS that 2 standard barbs were nose to nose, sort of slowly spinning around, and I didn't know if they were fighting, then they moved side by side (nose to tail) and continued to spin. He said they weren't fighting and were actually pairing up. Could this have caused the extra agression/nipping?
Sorry to have to keep asking for help, but any advice is appreciated, as always.
 :)

Title: Re: Nipping tiger barbs
Post by: Sue on October 11, 2016, 08:16:02 PM
If you remove them from the tank to heal, the remaining 17 will have to resort the hierarchy, then when you return the two they'll have to do it all over again. I would be inclined to leave them there, do more water changes as fresh water is the best cure (if that's possible with all your tanks  ;) ) and keep an eye on them.

Do you know if the two are males or females? If they are both females, the likely explanation is mating. With a lot of species males chase females, often quite aggressively, and females can end up with shredded fins, usually their tails. My female gudgeons have bits missing from their tails after spawning, and the ricefish females often have the odd chunk gone.
Title: Re: Nipping tiger barbs
Post by: Littlefish on October 11, 2016, 08:47:32 PM
Slightly more urgent issue.
I was watching the tank and noticed that one of the nipped ones was swimming strangely, and when it came closer to the front of the tank I noticed some fungus on the nipped tail. I've put him in the hospital tank and given the first dose of esha2000. Not holding out much hope as it seems quite wobbly/weak.
I'll do a water change on the main tank, and then perhaps 15-20% every other day, if that is going to help.
I'll try to get a closer look at the other nipped one to try to work out the sex.
Title: Re: Nipping tiger barbs
Post by: Cod_only_knows on October 11, 2016, 10:11:49 PM
I've read that fish will often bully diseased fish, which could explain the nipped tail. Hope the little fella pulls through!
Title: Re: Nipping tiger barbs
Post by: fcmf on October 11, 2016, 10:13:26 PM
I think that course of action to isolate and dose with the eSHa 2000 sounds sensible, in light of the fungus as well. Scrupulous water quality is important in such circumstances, so a small water change every other day as Sue/you suggest does sound sensible.

[I have Melafix as well - although it's only like a disinfectant, I found it useful as a "halfway house" when undecided whether to isolate and treat my pygmy cories with eSHa 2000 or whether not to treat ie I just put a small dose of it in the main tank as it's very mild and so wouldn't have adversely affected the healthy fish.]

Title: Re: Nipping tiger barbs
Post by: Littlefish on October 12, 2016, 05:55:02 PM
Unfortunately the little fella didn't make it. I've also had a fatality in the main tiger barb tank.
I've done another 20% water change and I'm going to keep an eye on things.

I also checked the other fish that had their tails nipped, and they were female, so perhaps the damage was not from fighting.
Title: Re: Nipping tiger barbs
Post by: fcmf on October 12, 2016, 06:08:49 PM
Aw- really very sorry to read of this.  :'(

Whatever is going on, it seems that there's nothing more you could have done ie you tried treating one, but the outcome was the same for both the treated and untreated ones. Hmmm... not sure what to suggest here...
Title: Re: Nipping tiger barbs
Post by: Littlefish on October 12, 2016, 06:49:44 PM
The rest seem quite perky, so I'll do daily water changes and see how things go.
The others seemed perky, and it was only yesterday that I noticed that the one seemed wobbly.
Obviously I need to keep a much closer eye on them, which I will do.
Title: Re: Nipping tiger barbs
Post by: Richard W on October 13, 2016, 07:20:12 AM
I started with 10 green tiger barbs in a 120 litre tank with other fish. I now only have four left, the others having been subject to the same thing, i.e. incessant tail nipping which only started when the fish matured.. I began by moving the badly affected ones, as I noticed them, into other tanks, but in spite of this and treatment they all died. I think it's the combination of the nipping, with possible infection, and stress that kills them. There is only one male left, he now has the three females to himself and is extremely large and brightly coloured, definitely the alpha male.
My Black Ruby barbs have a similar problem but seem tougher, I still have three males and five females of the ten young fish I started with. Two of the males have bitten tails but they still seem otherwise healthy and have been like this for two years now, they seem to be much more resilient than the tigers.
I won't be getting any more of these barbs in any future stocking,  prefer the more peaceful types. In spite of strong inter-male rivalry among my Emperor tetras, they all still have their beautiful tails intact!
Title: Re: Nipping tiger barbs
Post by: Littlefish on October 13, 2016, 04:41:33 PM
I do like the green ones, and as most of my green ones are younger they are less nippy. I was begining to wonder what I was doing wrong with my tank, it's 100cm, 125L, species only, decent numbers, and still they were nipping and falling ill.
It seems to mainly be the females with nipped tails now, but it still worries me. I don't know if I will replace them if I have any more fatalities now. I also like checkered barbs, which are still active, but smaller and more peaceful, so I might consider some of them in the future.
I'll just keep doing daily water changes and keep an eye on the tank for now.
Sorry to hear that you have not had a great deal of luck with your tiger barbs. I think that you are probably correct, less nippy or more resiliant is probably the way forward for the future.