Originally Posted by ScottyXTUK
Yes I have live plants and thanks for the advice. Would I really need to get rid of some of the fish? Couldn't I put them in my new tank once set up? I'm pretty sure the serpas aren't the culprits, they chase each other but seem to leave the other fish alone. The Danios are always near the surface anyhow and no of the tetras venture there.
I'm pretty sure it's the fighting fish, think you call them Bettas in US? They seem to get aggresive when they see the Danio and chase her off and they do hang around where she does. Should I leave her in the breeding box or will that harm her?
Yes the neon and cardinals do shoal up together, they look great. Also I know about the Dennisons and to get a few more but they are quite expensive here at around £15 so can only but 1 at a time.
HAHA i didn't realize the "Fighting Fish" were betta...wow...i feel stupid. Yeah you are right, those would be the ones to be fin nippers. Although Serpae are notorious for it as well.
How big is the breeding box? Usually some bettas live their whole live sin tiny boxes like that sadly. Are the two bettas aggresive with one another? If so relocating them and maybe getting 2 more females could solve that problem. I wouldn't add any more bettas to the existing tank though.
If your neons and cardinals school together that is perfect.
Absolutely that would be a better option to relocate them. Getting rid of fish is always the last option.
That may be the way to go...take 1-2 of the current small schools out of this tank ( put it in the new tanks ) and add a few more fish to those schools.
Here is what I suggest (Depending on tank size of the new one)
Move two of the smaller schools (5-6 or under) into the new tank. Add 2-3 fish for each of those school...make 7-8 fish per school. That would be awesome.
Then you can maybe add 2-3 fish to the 1-2 small schools in the current tank so those fish calm down.
This way you get less fish in one tank which means less bio load and less maintenance. Bigger schools for the small schools...so the fish will be happier. What size is the new tank?
Putting that fish back into the main tank could stress it. If the fins arent healed it could have a hard time swimming. With bettas in the main tank they will go for the fish and could kill it. Keeping the hurt fish isolated it the best idea for now. If you have bigger box that would be best i wouldn't put her back yet (one of my fish died because I put him back too soon he got picked on).
You could try keeping that fish in a 1 gallon hospital tank and water change every day. Unless you have a set up cycled hospital tank...
The breeding box is good because it keeps it in the good water and keeps it isolated. Only problem is the size. The Danio will NOT like the small confined area...but it will just die in the community right now....hard and tough spot.
-- Can you get a picture of the danio? How many extra tanks do you have? Any set up?