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Danio lump/growth?
Any thoughts on what may have happened to my danio?
The lump started to appear 8/9 days ago gradually getting bigger.
It's not affecting him, he's eating/swimming/chasing ..doing everything as usual, just this lump has appeared?
The danio's are old..approx6-8 years, the water parameters are as usual. I did a bit of a rescape in the tank and added a couple of new plants maybe 2 days before this appeared. I wondered if he had maybe caught himself when I was rearranging his tank but it hasn't really looked as if there is any broken skin.
Could it be age related?
I apologize for the photos, he may be old but he is still fast!!
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Looks like it's something to do with the digestive system from the shape and position, you could try an Epsom Salts bath (that's Epsom salts, not ordinary salt) with a teaspoon of Epsom Salts per 10 litre (use tankwater in a jug or hospital tank and top the tank up with fresh). It is probably down to age though.
If at first you don't succeed....
...get someone else to do it! Big Grin

Enjoy your fish, shrimps and snails!

All my posts are from a desktop.
Mobiles are way too complicated for me, although I do have one now. Wink
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If he's not pooing normally, then an intestinal blockage is a possibility - but likely a faint one. It could slso be a cyst - but you'd only be able to find that out via biopsy (or poking it with a pin!)

Fish in general have most of the same genetic characteristics that we do ; for some reason Danios in particular seem to be a favourite subject for fishy research, and I recall seeing an assessment of the percentage of genes that they and we share. I don't remember the exact figure, but I do remember saying 'blimey!' because the figure was so high.

So fish tend to suffer from many of the diseases and organ failures that we do. As they age, so the likelihood of something going wrong mechanically (as it were) increases, and that includes things such as tumours (which would be my tentative guess in your fish's case, since there doesn't appear to be an external lesion/infection).

If my guess is correct, then there's not a lot you/we can do about it, and as long as he's behaving normally there's no need to get the clove oil out.
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Spotted Blue-Eye Rainbows
Food : anything that appears in an outside bath, plus: blackworms, daphnia, earthworms, microworms, moina, waterlouse
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Thanks for your thoughts/answers plankton & vale.
It seems his daily ''motions' are normal (not that I'm an expert on fish poo!)
Vale, once you mentioned it I too have also read something about danios being one of the most researched fish due to our many similarities!
My gut feeling was tumor of some sort, probably age related..we shall take each day as it comes so to speak😐
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Lost him in the night 😑
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Sorry for your loss Sarah Sad
6-8years is a good run for danios, your obviously doing something right!
 😇 Heaven doesn’t want me...
And Hell is afraid I’ll take over! 😈
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Sorry you lost him Sad , but, as Iain says, it's a good age for them.
If at first you don't succeed....
...get someone else to do it! Big Grin

Enjoy your fish, shrimps and snails!

All my posts are from a desktop.
Mobiles are way too complicated for me, although I do have one now. Wink
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Sorry for your loss Sad
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Sorry you lost him  Sad
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