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penguin tetra fighting

This is a discussion on penguin tetra fighting within the Characins forums, part of the Freshwater and Tropical Fish category; --> That helped a little bit, but... could you do a video and just hold the camera steady in one place capturing the entire tank? ...

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penguin tetra fighting
Old 02-05-2012, 11:33 AM   #31
 
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That helped a little bit, but... could you do a video and just hold the camera steady in one place capturing the entire tank? This would allow me to see how everything in the tank is interacting. If you sit in a chair out in front quietly for a few minutes, then film the video, the fish wuld proably be more "normal". Someone moveing around outside the tank often causes less than "normal" actions. Hope this all makes sense.

On the reseaqrch, we have fish profiles under the second tab from the left in the blue bar across the top of the page. And as I wrote most of the freshwater, I can vouch for their accuracy; I confirm with the Catalog of Fishes of the California Academy of Sciences, Vertebrate Zoology and Anthropology, Department of Ichthyology. We also have introductory blurbs on the various orders/families which you can see by clicking on the name like "Cyprinids" or "Characins" or "Atherinids" etc. Then the species included are listed as links below these names.
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Old 02-05-2012, 04:48 PM   #32
 
Here's one that's steady. I'm looking for the receipt so I can take them back and exchange for other Tetras.

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Old 02-05-2012, 06:53 PM   #33
 
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That was very good, thanks. I was able to see exactly what I was looking for. I saw a couple suggestions of male display as opposed to outright aggression, so it could be the former rather than the latter. It`s next to impossible to distinguish male/female except by girth. The behaviour I see in this second video parallels what I had with my Rainbow Emperor Tetra, and that ended up with my getting rid of the lot of them (to another aquarist, who i told about the issue beforehand). This species may be prone to this behaviour, I can't say as I've never maintained them. Perhaps others who have can watch and comment if this is normal.

My point is that if you return the two males, any new fish may end up just the same, or another male (if there are more) may take over. This sort of male/female interaction in a species cannot be "cured" in any way if the fish are healthy. Having more hiding spots, like when the plants grow to the surface in a few months, sometimes helps but often not. The fish is simply doing what it naturally does. In their habitat the females can escape, but that capability in the aquarium is non-existent even in this large a tank.

That`s about the best I can provide on this issue.

Something else was noticed, the flow from the filter is quite strong. Can you reduce this somehow? Either by turning it down (if that possibility exists with your filter), or turning the return into the end wall to diffuse the current? Gourami and angelfish would appreciate quieter water.
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Old 02-05-2012, 08:34 PM   #34
 
Huh. I just checked the receipt for my second time buying the last 4 Penguins and I wasn't charged... so now I don't think Petsmart will do a direct exchange for 4.

Looks like I should have stuck with my original idea, 10 Ghost Catfish instead of these guys. I did my research and saw on several different sites that they're "peaceful community fish" and thought they'd be a great fit. Clearly not. Even if I do get rid of the two, another could start acting up. Just goes to show that even if you do research, things can show up. Ghosts here are a bit expensive, $6 per fish.

Do you have any different suggestions?

As for the flow, I need to top up the water. That helps a little bit when the output is fully underwater. It's directed at the side glass as far as it can go without having water splash over the rim. This tank doesn't have a lid. None of the reputed jumpers like my Apistogrammas and the Siamensis Algae Eater has come close to trying to jump.

I could move the filter more towards the center and direct the flow against the side glass directly. There's no option to slow the flow. It's a Marineland HOT Magnum canister filter.

Last edited by ZeeZ; 02-05-2012 at 08:39 PM..
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Old 02-06-2012, 10:33 AM   #35
 
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Quote:
Originally Posted by ZeeZ View Post
Huh. I just checked the receipt for my second time buying the last 4 Penguins and I wasn't charged... so now I don't think Petsmart will do a direct exchange for 4.

Looks like I should have stuck with my original idea, 10 Ghost Catfish instead of these guys. I did my research and saw on several different sites that they're "peaceful community fish" and thought they'd be a great fit. Clearly not. Even if I do get rid of the two, another could start acting up. Just goes to show that even if you do research, things can show up. Ghosts here are a bit expensive, $6 per fish.

Do you have any different suggestions?

As for the flow, I need to top up the water. That helps a little bit when the output is fully underwater. It's directed at the side glass as far as it can go without having water splash over the rim. This tank doesn't have a lid. None of the reputed jumpers like my Apistogrammas and the Siamensis Algae Eater has come close to trying to jump.

I could move the filter more towards the center and direct the flow against the side glass directly. There's no option to slow the flow. It's a Marineland HOT Magnum canister filter.
I have one of those HOT Magnums, sitting in the cupboard in case I ever need a backup. Too much current for any but the largest tanks, or if one has fish needing that. Which you don't, else i would not have mentioned it. Try moving it to the centre and directing it toward one end. I have that arrangement with my Rena XP3, for reasons i won't go into, but it does work as by the time the water flow hits the end glass and bounces back it is less strong.

If by Ghost Catfish you mean the Glass Catfish, check our profile [click the shaded name]. This fish will not do well in strong water flow, but aside from that, just note the profile data. Needs a group of 5-6.

Characins are generally peaceful, but one cannot guarantee this. Environment issues, water parameters, tank size can all affect them differently. As you have the fish, I would work to calm the water flow down, consider more plants and some more floating (I see some in the video). All of this is more in keeping with the fish's natural instincts and it might help.
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