Care of Fish
Betta and Siamese Fighting Fish

How can you tell a betta fish has a tumor?

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Wiki User
2011-09-13 05:23:09

If the lump is covered with scales, and the scales are a

continuation of their normal scales / skin(?) then it is probably a

tumor. It is easiest to check this by using a torch to directly

shine light on the lump, but please don't shine it in their eyes!

If it is not covered with scales, then it is likely to be an

external parasite.

It is quite possible for Bettas to live a long-ish and happy

life with a tumor, but sometimes the tumor affects more of their

body than you can see, and they pass away.

Tumors are very common with Bettas, due to inbreeding and

hormone therapy when they are young to make them grow quicker, to

make more money.

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