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It could be because he/she has over-eaten or because he/she has dropsy. If only the "chest" is swollen, he/she has probably eaten too much. Don't feed him/her for a day or two, or give him/her a small piece of a pea (put a frozen pea in a little water and microwave for 10-15 seconds, then cool it down and cut it up, no skin). Start feeding him/her a little less at meal times.
If the whole fish is swollen, and the scales are sticking out (a little like a pinecone), it is dropsy. Dropsy can be caused by many things, including bacteria. If it is bacterial, it can be treated. Go to the pet store and look for fish medication. Good ones to look for are Maracyn or Maracyn-Two, but they are not the only medicines out there. Read the label of each brand carefully to see what will treat dropsy the best.
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If it's a female, it could simply be that she's gravid (filled with eggs).
What else can I help you with?
Why is your betta fish swollen and not moving?
Probably because it's dead and going rotten.
My betta fish is swollen and looks pregnant but it's a male is it dying?
if his scales are sticking up like a (pine cone) call petsmart or petco and ask them about it
What kinds of betta are there?
There are half moon betta, delta betta, round tail betta, long tailed betta, crown tailed betta, king betta, and others I don't know of yet.
What is a betta?
A betta is a fish of the species Betta, especially Betta splendens, commonly known as the Siamese fighting fish.
How do you get betta eggs?
From a female Betta. Then the male Betta fertilizes them when they breed together.
What is a rare betta?
a wild betta
What is a staple diet for a male betta?
A betta can eat any betta food regardless of the manufacturer; they typically market it as Betta Bites.
Plakat betta fish mate with a short tail female betta?
no because male betta's are really aggressive to other betta's which plakats are male's. but female betta's can stay with other females. don't try to, one of your betta's are going to end up dead.
How do you say Betta fish in french?
"Poisson Betta"
What was the oldest betta?
The wild betta from southeast Asia
Are Betta Fish omnivores?
No betta fish are carnivores.
How can you tell a girl betta from a boy betta?
A female betta has very small fins with a long body while the male betta have lots of nice flowing fins.
