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post #1 of 4 Old 05-16-2011, 01:55 PM Thread Starter
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Unhappy Tetra Emergency

Hey guys.

Just Friday I went on a campout. When I got back, one of my female Lemon Tetras looked like it's mouth had just deteriorated. No white, grey, or anything. It's upper lip was missing. It's mouth/gill area is a less-than-normally transparent color with a white-ish tone to it. It hasn't been keeping up with the rest, but has been over to the side most of the time.

I have another female Lemon Tetra had a very badly ripped dorsal fin. Both males (2m,3f [I keep losing Lemon Tetras I buy from my LFS]) look fine. I suspect that they are the cause of this instance, and perhaps the missing upper lip also. The males are territorial towards each other mostly, but often they will be aggressive towards the females.

Today is when I became really concerned, and for good and tragic reason. I lost an appearently healthy lemon tetra female this morning. This is the only one that didn't have any injuries. Under close examination I cannot find any physical signs of injury.

I have heard that in the wild (and captivity unfortunately) Tetras will release a hormone/phermone (I can't remember which) that will alert other tetras in the area and cause them to move on. I am worried that perhaps the tetras feel trapped "with the sharks". They can't leave and with all the injuries and 1 unexpected death, I imagine that they are all in a panic.

I am going to do a rather large water change today. Another thing that makes me really nervous is that I am "borrowing" my brother's (BlackGoldfish on here) thin Rubberlip Pleco to help with my "algae" problem. I really don't want his Plec to die from tetras dying and suddenly polluting the water.

Do I need to get rid of all the Lemon Tetras? I am certainly not getting anymore because I am tired of them dying after I bring them home from my LFS (which is not a chain). Now I have water that has freaking out tetras in it who only have 4 members and possibly soon to be 3 or less.

What a nightmare. What do you guys think?

small fry,

FireOasis - 3g
Zachary the Halfmoon Plakat

CichlidHaven - 55g (under construction!)
0.0.7 Black Widow Tetra
1.0.1 Convict Cichlid
0.1.0 Firemouth Cichlid

HermitBase - 10g
Zephus & Monoculus the Purple Pinchers (Coenobita clypeatus)

BreedingProjects
x1 Convict Cichlid Pair (actively breeding)
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post #2 of 4 Old 05-16-2011, 06:43 PM
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What size is the tank, and what other fish are in it? And how long have you had these Lemons?

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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post #3 of 4 Old 05-16-2011, 10:11 PM Thread Starter
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Oh, I am sorry. I left out tons of details.

Tank - 55 gallon
Tankmates - 2 Albino C., 1 "Julii"/3 stripe C., temporarily 1 RL pleco
I have them for afew months now, but they were moved from the QT into the 55 gallon tank in April.

small fry,

FireOasis - 3g
Zachary the Halfmoon Plakat

CichlidHaven - 55g (under construction!)
0.0.7 Black Widow Tetra
1.0.1 Convict Cichlid
0.1.0 Firemouth Cichlid

HermitBase - 10g
Zephus & Monoculus the Purple Pinchers (Coenobita clypeatus)

BreedingProjects
x1 Convict Cichlid Pair (actively breeding)
small fry is offline  
post #4 of 4 Old 05-17-2011, 11:51 AM
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I can't see any of those fish chewing up the Tetra, so it may be either a disease [I have seen this now and then with this or that fish] or over-aggressive behaviour on the part of the tetra. The latter might be solved by having more of them. You have room, so if you like this particular species, I would suggest a group of 8 or more. Check the profile to ensure nothing in your tank is counter to their needs (temp, etc).

Byron Hosking, BMus, MA
Vancouver, BC, Canada

The aquarist is one who must learn the ways of the biologist, the chemist, and the veterinarian. [unknown source]

Something we all need to remember: The fish you've acquired was quite happy not being owned by you, minding its own business. If you’re going to take it under your wing then you’re responsible for it. Every aspect of its life is under your control, from water quality and temperature to swimming space. [Nathan Hill in PFK]
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