Aggressive glow light tetra

Jamie1066

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I recently started a shoal of glow light tetras with four. One has started chasing the others:( Would adding more help? Should I remove him (I have another community tank he could go into)? Then I would need to add more to keep him company and hope that he doesn’t resume his aggression. Thx for suggestions!
 
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Jamie1066

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RyanC14 said:
How big is the tank? Has the tetra caused any actual damage to the others?
10 gallon. I don’t think he has actually damaged the others except emotionally! They are not shoaling as well as they did at first: he keeps breaking up the shoal.
 

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Can you add a picture to be sure they are really Glowlight tetras? And how many other fish are with them?
 

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It could be a male wanting to get busy. Might be able to sex them from photos. As long as there's no physical damage, I wouldn't worry about it.

I am hoping he does have Glow Light Tetras, Hemigrammus erythrozonus, as Glofish Tetras get too big for a 10. Without a photo, we can't say what he has.
 

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Jamie1066 said:
I recently started a shoal of glow light tetras with four. One has started chasing the others:( Would adding more help? Should I remove him (I have another community tank he could go into)? Then I would need to add more to keep him company and hope that he doesn’t resume his aggression. Thx for suggestions!
I’m having the same issue. I originally had 4 Glowlight Tetra. They always swam together and I enjoyed watching them. I felt bad that the group was so small. I added 5 more yesterday. Now they are showing aggression towards 2 of the new guys. And they aren’t swimming together like the original 4 did. Now they act like my group of 7 Black Neon Tetra. They just hover in place. I’m going to give it a few more days and see what happens. The aggression isn’t causing physical harm, maybe some stress. Hopefully yours and mine figure it out on there own.
 

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Jamie1066 said:
There are two bleeding heart tetras with them. Pic of the fish in question:
653DD7D1-E1CE-4594-AFAC-11C2511EF7D5.jpeg
Unless it’s just the lighting, it looks a little pale. It could be stressed.AD7B1621-8391-4CB8-BFE1-A5EB3A67581F.jpeg6A2A5F93-00CA-4F54-9DD9-1B6B9A84ECA8.jpeg
 
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Jamie1066

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Fljoe said:
Unless it’s just the lighting, it looks a little pale. It could be stressed.AD7B1621-8391-4CB8-BFE1-A5EB3A67581F.jpeg6A2A5F93-00CA-4F54-9DD9-1B6B9A84ECA8.jpeg
these pics may be better. They are not super colorful but I am sure they are being stressed out by the bully in their midst.
AEB4212C-7D72-478B-95C7-B4912CA8A0FE.jpeg
BDF15D31-2E40-4F1C-9B75-289E0D820290.jpeg
1A93A013-3974-459C-BE6C-A13EA3154D1C.jpeg
 
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Jamie1066

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chromedome52 said:
It could be a male wanting to get busy. Might be able to sex them from photos. As long as there's no physical damage, I wouldn't worry about it.

I am hoping he does have Glow Light Tetras, Hemigrammus erythrozonus, as Glofish Tetras get too big for a 10. Without a photo, we can't say what he has.
No, they’re definitely not Glofish.
 

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Fljoe

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Jamie1066 said:
these pics may be better. They are not super colorful but I am sure they are being stressed out by the bully in their midst.
AEB4212C-7D72-478B-95C7-B4912CA8A0FE.jpeg
BDF15D31-2E40-4F1C-9B75-289E0D820290.jpeg
1A93A013-3974-459C-BE6C-A13EA3154D1C.jpeg
Yes they do look better in those pictures.
Although from what I remember reading about them, they do like a darker background and substrate. I don’t know if that would effect the behavior. I’m fairly new to this. So I am still learning myself.
 
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Jamie1066

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Fljoe said:
Yes they do look better in those pictures.
Although from what I remember reading about them, they do like a darker background and substrate. I don’t know if that would effect the behavior. I’m fairly new to this. So I am still learning myself.
Darker environment? Interesting! I’ve never heard that. I can certainly darken the substrate. I’ll look into lower wattage lighting, too. I want them to be comfortable. Thanks!
 

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Jamie1066 said:
Darker environment? Interesting! I’ve never heard that. I can certainly darken the substrate. I’ll look into lower wattage lighting, too. I want them to be comfortable. Thanks!
I could be remembering wrong. I’ve been researching a lot of fish. If you google them, it will pull up lots of good information on what makes them happy and comfortable.
 

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Jamie1066 said:
Darker environment? Interesting! I’ve never heard that. I can certainly darken the substrate. I’ll look into lower wattage lighting, too. I want them to be comfortable. Thanks!
I do have a black background, but my substrate is tan gravel. Read this.
8EA138C4-EEFE-408B-BA64-336CC8B87147.jpeg
 
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Jamie1066

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Fljoe said:
I do have a black background, but my substrate is tan gravel. Read this.
8EA138C4-EEFE-408B-BA64-336CC8B87147.jpeg
Great info. But it sounds like glowlights may not be a great choice for building a community tank: unless it’s a community of dimness-loving species. The water here isn’t great. The temp is 78. I’ll jump right on adding more plants and tannins. And finding compatible tank mates. Thanks!
 

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Jamie1066 said:
Great info. But it sounds like glowlights may not be a great choice for building a community tank: unless it’s a community of dimness-loving species. The water here isn’t great. The temp is 78. I’ll jump right on adding more plants and tannins. And finding compatible tank mates. Thanks!
They are adaptable. I am in Florida with hard water and the tank runs 80-81 degrees.
 

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