Reducing juvenile aggression

NicoleC

New member
Any tricks to reducing aggression between juveniles? Mine are beating the snot out of each other -- only the smallest ones don't have torn fins now.

I have tried more PVC, less PVC, no PVC... nothing seems to put a dent in their sparring.
 
I am lothe to introduce potential pathogens to the larval tank from my main tank. Hmmmm... they make fake corals; how about fake chaeto?
 
Snarls of green fish line? Don't they make some freshwater moplike floaters to hide guppies? My sense is you've got a world without boundaries and everyone's hysterical. Get them a recognizable spot, be it pillars, floaty mops, whatever, that lets them catch a quiet moment.
 
How many do you have and what size tank? I've got minimal experience with this so far, but a lot seems to have to do with the nubmer and space. I.e., the more crowded, the less the issue, although I also had problems this week when I combined two small batches thinking it would decrease their spats, but the smallest of the younger group were too abused, so I pulled them out and put them with my 2-week olds. I have noticed that rearranging the PVC's every day seems to cut down on fighting, but I haven't tried that approach long enough to know if it lasts more than a week or so.

Kathy
 
alive cheato can be cleaned of anything of much bother, fresh water and some drying alone is fairly good, if you want to take it to extreme even bleach will work dilluted and VERY carefully, then a soak in dechlore, and if you have some extra lights to toss over the tank they are in, it wont take much, and you will have a tank full of cheato.

however, when I was doing mandarins, i had the same problem my solution was a black container and a zillion of those plastic plants used in kiddy aquariums.
 
Well, I have 15 or 16 in a 15g. Perhaps that IS too much room for them, but other than moving them into the 10g with the YWG (who is NOT ready to compete for food and space yet), they are stuck where they are.

Perhaps I could partition off part of the tank. Plastic aquarium plants are stupidly expensive, but maybe those, too.
 
What species? I thought you had ocellaris, I have never seen aggression with them.

Sounds like WAAAAY too much room for 15-16, how about concentrating them in a "fuge" of sorts inside the 15?

>>
Plastic aquarium plants are stupidly expensive

Go to a "Michael's" craft store or something like that. You can buy a shopping bag full of plastic plants for a few bucks. Just watch for the ones that have wire inserts in the stalks/ stems. You can bundle them with tie wraps or use hot glue to attach them to bases like pieces of clay tile or rock. I have fooled more than one visitor asking "what the heck kind of macro is that " :D
 
Good idea about the plants, David. I was looking at them online and thinking I didn't want the stupid "anchors" anyway.

There used to be more fish in there, but the big ones have new homes! These are ocellaris. I guess I just have feisty ones.

Perhaps I can make a mini-tank of plastic canvas for them, and halve the size of the tank?
 
Or make a smaller version of the this "glass basket" with bottom panel removed and replaced with window screen.
19883glass_basket.JPG
 
In that pic you can also see a "fishbowl 'fuge" to the left and a smaller acrylic box with screen bottom to the right. These all work very well.
 
3 sheets of plastic canvas, a pile of cable ties and a cup of coffee later:

cage.jpg


The fish are milling about in confusion at the moment... which I suppose is better than facing off and fighting!
 
Perfect :D You say three sheets, what is holding it against the wall of the tank? I like it, I forgot all about that material even though I have some :rolleyes: I'm building a divided tank for quarantine of new fish, that's what I'll use. I was gonna use pvc pegboard from Lowe's but this is better :)
 
3 sheet cut up into 4 pieces. Actually, I think it was two sheets? Anyway, it's a 4-sided box, although it doesn't look very rectangular in that pic!

I bought about 30 Sheets of plastic canvas at a thrift store for 10 cents each a few years ago and I STILL have several sheets left. They are really big sheets; I never see those for sale anymore.

Washing plastic plants and soaking in bleach as I type this... decoration coming up soon.
 
Great ideas! My ocellaris have been plenty aggressive with each other, but I assumed it was a too-much-space thing (I had a small batch - 3! - in a 2.5G). I rearranged the PVC every day for a couple of weeks until the next batch was big enough to join them. 15 in the 2.5G is good for now...
 
I always find when you get down to about 10 ocellaris they start going each other, normally i could loose 5 in a few days at those low numbers.

Percs on the other hand are nasty little buggers and will kill each other at a moments notice. I normally try to croud them if they get to cranky, which is about what you have done.

Good luck

Christian
 
Nicole, that looks really nice! I don't have the aggression thing, yet, but I may just do that for esthetics, and to enrich their environment.
 
Yeah, I was thinking it looked pretty good. Green and orange goes well together! ;)

They don't get in it, though, at least not yet, although at suppertime the Formula One cube went behind the "bush" and about half of their dives after it -- while the other half sort of hovered in confusion.

It also may prep them to host in something in a reef tank. My babies that went to clown-less homes are not hosting anything yet. The two babies that went to be a mate for a clown both adopted the female's host right away. (Both frogspawns.)
 
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