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Discussion Starter · #1 ·
Frank seems to be the most knowledgeable on this topic, so hopefully he can fill us in..............

when you kept them, how did you keep them, tank size, number of fish per tank, etc. I dont know anything about these fish really and you seem to know the most about them, please help
anyother info that would help us take care of them is useful as well

one last question though it does sounds a bit unlikely, do you think its possible to have them breed through egg crate divider?

Thanks in advance Frank
 

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The C. mento were kept in a 125 gallon aquario, heavily planted with Amazon sword plants. The filtration was kept mild and not a heavy flow as these fish are not found in rivers, but creeks. A bubble wand was used more for oxygenation than anything else because of the filtration used (2 whisper 5's set at slow). I cannot give you a set number of fishes because the behavior was the main thrust of the examination. But at one time, I did keep about 62 of them together at about 1 1/2 TL. Then 25 of various sizes to determine compatibility and other nuances. All in all, a little over 200 species of C. mento made their way into that 125 gallon aquario over the course of time from 1985-1999. The sexual dimorphism of the species was discovered by me in 1986 and information forwarded to Dr. William L. Fink in 1987. It remained unpublished until 1994 when I went public with it via the old OPEFE Piranhas and Predatory Fishes Journal newsletter. No information is available about their breeding or spawning behavior as S. American aquaculture has only recently received my sexual dimorphism information via Michel Jegu.

It seems they had several hundred large specimens (5 1/2 TL) in formalin and none saw the anal fin and what it signified at the Museo Sao Paulo, Br. As for the egg crate, no idea on it.
 

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Discussion Starter · #3 ·
thanks Frank, I dont have current in my tank for the wimple, it looks like by luck my lfs is getting 6 more tomorrow and I will get 2 more, if they dont do well, which I bet from what you said they will be seperated with egg crate. I really enjoy the fish already and so does the girlfriend which is always a good sign


they have well water with pH of upper 7s. I saw you suggested that I keep it low to minimize fighting, but it doesnt look like that will be possible as the water has high alkalinity, do you think that will be a significant problem for me?
 

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Discussion Starter · #4 ·
Frank you also said the female are dominant which would be better to have 2 males and one female or 1 male and 2 females?
 

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Frank you also said the female are dominant
Never said any such thing. It appears that females act like a black widow spider, not that they are in nature like that. They did indeed attack the males and kill most of them. But I never ruled out the possibility it could have been due to age, size or temperature. There are always mitigating factors why fish behave a certain way. But never rule out anything.

which would be better to have 2 males and one female or 1 male and 2 females?
I have no idea, it will be luck of draw on compatibility, if you can keep either sex for very long together. Provide plenty of cover, not that it will mean much anyway as these fish are solitary. They are to me, similar to S. rhombeus in temperment.
 

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Sir Nathan XXI Posted on Mar 27 2003, 04:01 AM
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ok, I understand it better now, thanks

I was confused because the lfs had theirs in a tank with platies and tetras
Not unusual to find them mixed in with fishes not C. mento. Please keep in mind though, dealers have little experience with these fish and naturally assume they will not terrorize or kill the companions because they think them to be false piranas. Very bad mistake as these fish are experts on removing scales. One example I can cite was with a large bluegill I had placed as a tank mate for feeding for one solitary wimple (about 4 inches TL). The fish denuded the bluegill in a matter of a couple hours. The 7 inch bluegill had to be euthanized.
 

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Usefull info. Thanks!
 

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Discussion Starter · #12 ·
well I got 2 more today for $25 each and they both are females and are bigger than the male for a total of three







I will keep you all updated on how they do, so far they try their darn best to get through the divider to the big convicts and arent concerned with all the feeders in there, wierd hunh?
 

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Sir Nathan XXI Posted on Mar 28 2003, 04:48 PM
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Frank I havent seen them eat a feeder yet, when the scale them do they remove the scales only or the entire skin?
The skin is sometimes damaged. Guppies are primarily eaten since their scaling is not sufficient for a real meal. My suggestion would be place a cichlid in there and let the wimples feast.
 

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Discussion Starter · #17 ·
hastatus said:
Sir Nathan XXI Posted on Mar 28 2003, 04:48 PM
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Frank I havent seen them eat a feeder yet, when the scale them do they remove the scales only or the entire skin?
The skin is sometimes damaged. Guppies are primarily eaten since their scaling is not sufficient for a real meal. My suggestion would be place a cichlid in there and let the wimples feast.
so thats why they try to get through the divider all day..............
I use egg crate to seperate a convict pair that I am hoping will breed soon and provide feeders for them, with a divider like that the babies will be able to get through to where the wimples can get them, I have goldfish in there too and they only killed on so far

maybe I will get a cichlid for them today
 

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I have odds the cichlid will be denuded of scales within a few minutes if the wimples are hungry enough. Be sure you euthanize the cichlid or feed it to your other piranas. No sense allowing it to suffer and die.
 

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yeah nate before i left for your place I fed the whimple I sold ya. They will chase the fish and hit them or bite them and u will see scales fly off and start to sink to the bottom of the tank and then they see them then will go down and eat them before they hit the bottom. This is from my own observations when I had the whimple.
 
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