Oscars & RD Q's

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Candiru
MFK Member
Aug 1, 2005
334
2
48
St. George, Utah
Alrighty guys, About a month ago I was given an 84gal tank with an absolutely MASSIVE fish load in it. We're talking 18 fish all over 12+" save for three or four 4-6" fish, not including the 30-40 thumbnail sized convict fry. I've been working on finding homes for most of the fish and distibuting them throughout other tanks. I'm having a couple of problems though.
In one 55gallon (temporary) I put a tiger oscar 12" and the large male convict 5". Bare bottom tank, aquaclear 500, regular water changes. The water they were in before was GROSS, off the test kit charts nasty. Anyway, the oscar has been listless since I moved him, and originally I thought he was just sulking, but I often walk in the room and think he's dead. In the last few weeks the convict started flashing and rubbing on the bottom of the tank, now the oscar is developing this white.. i don't know, flim over parts of his skin and his eyes are clouding over as well. I can't remember the last time I had an outbreak in my tanks, but I don't believe this is ich, as I see do not white dots, and it's not fuzzy like fungus. Because they were flashing, I thought we might have picked up parasites or something somewhere so I turned up the heat to 80*, added salt, and after two weeks of this with no change, added prazi. It's been about 4 days and there doesn't seem to be any change in the way they're acting. I don't get it. These damned free fish live in sewage their whole lives, I clean up their water (it was gradual as possible) and NOW they get sick?
Any advice appreciated.

Now onto the 84gallon tank itself. I'm down to 6 fish in here, two large red devils, two HUGE pacus, and two large common plecos. I'm still finding homes for everyone but the red devil pair. Now, the plan was to get rid of everything but the RDs (never had them before, but what pretty fish) but the less fish in the tank and the more often I clean the water, the more they court each other and move rocks and nest. Well, this is great and all, but courting RDs are REALLY rough on each other, and although their fins were ragged when I received them, even treating the water with salt is not helping them heal. In fact, they're just getting worse. Do I need more dithers for them? Obviously, I can't add anything until I get rid of the pacus (I might have a pond lined up for them when it gets a little warmer, but dang, that's a ways off yet) but is that likely it? They seem to enjoy each other's company, and I would prefer not to seperate them (If only I had the tank space). They aren't really super violet with each other, more like it's a little bit of damage at a time that amounts to a lot of ugly finnage, and because they keep at it, it doesn't have time to heal. Anyway, I have pics of the devils so you can see what I mean. Any opinions on healing them up? Can I reasonably add any other fish to an 84gal (after the pacus are gone of course) as dithers? Silver dollars maybe? Both male and female are adults at about 10-12".

freetank.jpg

reddevils1.jpg

Reddevils.jpg


Oh, and while I'm here... anyone want some free pacus? Local pickup only.
rdspacus.jpg
 
Man that RD would look SWEETer if it's fins weren't all ripped! ;)
 
I would (humainly) kill the pacu if you cant find homes for them. Same with one of the pleco. they are really nice looking RD's (minus the fins) it would suck to lose all of them. As far as your almost dead oscar I had this happen to me. I took a snakehead that was in **** water and put him in clean water with feeders 2 days later he died. I was really young then but as i now know you cant do that because they learn to live in the nasty water. the sudden change puts them in shock. I know you said you gradully did it but maybe not slow enough. as far as dithers I would use convicts. cheap and not quite as easy a kill. good luck.
 
A breeding pair of RD's really needs at least a 125gal tank for it to go well - aka the male not killing the female. If you're going to keep them in the 84gal, you're going to have to use a divider for her safety, or you'll likely end up with a dead female. Remove everyone else, as the tank isn't really large enough for the two devils alone, put a divider up in the middle with a hole that's only big enough for the female. That way she can stay with the male as long as she likes, but if things start getting rough, she can bail to the other side to safety and leave him behind.

As for the fins...I'd use salt with a raised temp, and Melafix. They should heal up, but they may never fully grow back.
 
I don't believe in killing fish just because someone who owned them was ignorant of the fish care. They didn't do anything, plus if they survived in that nasty water they've earned their lives.
 
I agree, if they're healthy, don't kill them. Do you have a local aquarium or zoo that could take them?
 
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