Emperor Tetra dying/ill?

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triivk

Aquarium Advice Newbie
Joined
Apr 11, 2022
Messages
4
Hi, new to this forum but was concerned about one of my emperor tetras. I have a recently cycled 250 litre (60ish gallon) tank, with 3 emperor tetras (I know that 3 is not an ideal number), 3 Buenos Aires tetras, 4 dwarf gourami, 6 neon tetras and 1 Chinese algae eater.

With a PH of 6.6, below 20ppm nitrate and no nitrite or ammonia, conditions are fairly stable. I have a canister filter, etc etc.

I noticed one of my emperor tetras was looking a little dull in colour, and notably smaller than my other two - this little fella is a lot less active than the others, and I am really worried.

Is he is just younger/different gender, or is it some sort of infection? Do I need to quarantine him?
(First attachment is afflicted fish, second is healthy)
 

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How long have you had the fish?

It could be a stress thing if its just been introduced to your tank and it not being in a suitably sized group. Is it eating?

Males do tend to have a little more colour, and i believe M/F have different coloured eyes, so maybe thats something to look for.
 
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