Nippy rosy barb

[Humbug12]

Hi I'm new here I've been keeping fish for about 4 years, all calm and all good, but I recently bought a new rosy barb because my biggest one lost it's mate and seemed lonely. I have 4 again now. One of them is really aggressive and is biting/disabling my other fish including green tiger barbs. I'm devastated. I can't catch it to isolate it, it's so fast. I guess I had it easy the last 4 years, no catching fish needed so i didn't know how hard it was now I'm ready to give up on fish keeping. I can't sell disabled fish, I can't catch the culprit. Lost

[BigBen]

Welcome!

Don't give up, everyone has "that" fish at some point. Slowly guide it towards a corner with the net at an angle below, and then lift. A bigger net always helps.

This is Herman. Herman ate all of my neons, killed my platies and terrorised everyone else. Herman was an arse. This was about about 12 to 15 years ago and I'm still going, despite the thoughts you have.

[Martinspuddle]

Greetings & welcome to

I recently bought a new rosy barb because my biggest one lost it's mate and seemed lonely. I have 4 again now.

Depending on your aquarium size, Barb species need to be kept in groups, at least six or more fish.

If you increase the group size the aggression towards other species will be gone.

[Humbug12]

Welcome!

Don't give up, everyone has "that" fish at some point. Slowly guide it towards a corner with the net at an angle below, and then lift. A bigger net always helps.

This is Herman. Herman ate all of my neons, killed my platies and terrorised everyone else. Herman was an arse. This was about about 12 to 15 years ago and I'm still going, despite the thoughts you have.

Not sure where I reply, hopefully here! Thank you for being so supportive. I'll have another go today. It's hard to catch it without netting other fish too. They all panic when they see the net. Thanks again

[Humbug12]

Greetings & welcome to

I recently bought a new rosy barb because my biggest one lost it's mate and seemed lonely. I have 4 again now.

Depending on your aquarium size, Barb species need to be kept in groups, at least six or more fish.

If you increase the group size the aggression towards other species will be gone.

Yikes! I daren't get more but I see your point. Thanks.

[Humbug12]

My tank is 180 litre. Live plants, bogwood and dragon rocks. Besides the Rosy there's green barbs (taking the brunt), rummy nose tetra, glowlight tetra, zebra loaches, a clown pleco, bristlenose pleco and kuli loaches. Neon tetras were killed by the barb and 3 of my green barbs are tailess or finless with bites on their body.

[plankton]

Welcome to the forum.
The easiest way is to use two nets and drive the fish into the stationary one using the other.
I found this out trying to catch a rogue angel fish who was killing all the other fish...so you're not the only one with bully problems in a tank.
Don't rosy barbs need it a bit cooler than the other fish? (I can't remember which barb it is that likes it cooler or find my notes on barbs ) If so, that may be part of the problem as well.

[Martinspuddle]

My tank is 180 litre. Live plants, bogwood and dragon rocks.

The easiest way is to use two nets and drive the fish into the stationary one using the other.

Good luck using that netting method with Dragon stone and fast Barbs!