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It sounds like some kind of abscess. If the fish is in the correct conditions for neons there's not much you can do. Neons need soft water, less than 4dGH, slightly acid pH6.5 to 6.8, fairly warm around 78F to 80F, zero nitrite and zero ammonia. If your conditions are not what are required for Neons (As above) you will have no success keeping neons or other (Amazonian) fish that require those conditions.
What else can I help you with?
What is a neon tetra?
a neon tetra is a fish. It has all sorts of neon colours on its body!
When was Black neon tetra created?
Black neon tetra was created in 1961.
When was Green neon tetra created?
Green neon tetra was created in 1963.
How does the neon tetra breathe?
A neon tetra breaths the same way as any other fish with gills
What is a neon Tetra baby called?
A baby neon.
What it the scientific name for the Black neon tetra fish?
the scientific name for the Black neon tetra fish is Hyphessobrycon herbertaxelrodi
Type of tetra fish?
Question is not clear. Do you mean: "What types of tetra fish are there?" Neon, black neon, black, headlight-taillight, bleeding heart, carninal, glow-lite, to name a few, and there are many others.
What does it mean if your tetra neon fish is laying on its side on the bottom of the tank?
It's sick and/or dying.
Is a female neon tetra fish bigger than the male neon tetra?
it is slightly wider, and has a more curved blue stripe
Can Betta go with neon tetra?
i wouldnt recommend it as neon tetras should be kept in schools of 5 and the stress couldnt easily kill the tetra
Where do neon tetra fish originate from?
Peru and Brazil.
What is the simplest fish?
I would say the Neon Tetra.
