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One of my threadfins is swimming towards the waters surface. It more like floating. I saw him earlier floating upside down. Though it looks ok now, it is swimming slowly and aloof from the shoal. There doesn't seem to be any visible signs of stress or disease, Just a little pale than the others. Also when I approached the tank, it started swimming frantically with the other fish(thinking its feeding time). Anybody can help?

p.s. did not post a pic because there is no noticeable problem on the fish's exterior.

Confusing symptoms indeed.

Did not feed anything for last 2 days. The creature seems to be doing fine now.

you should feed live food, it cleans their intestines out. prevents swim bladder issues and constipation from happening..... mosquito larvae are so easy, just leave some aquarium water out and just use a tea strainer to collect them on a weekly basis.. Threadfins are notorious for having small mouths, so even live food is not easy to give them except these larvae or tiny worms that swim.

I feed them blanched skinned peas once a week, regardless of any problem or not. I purposely put a large amount since my shrimp goggles up the rest. 3 minced peas vanishes within 1/2 hr. Only last week and this week I could not get my hand on any peas.
But will try the mosquito thing. thanks for letting me know.

slowpoison wrote:I feed them blanched skinned peas once a week, regardless of any problem or not. I purposely put a large amount since my shrimp goggles up the rest. 3 minced peas vanishes within 1/2 hr. Only last week and this week I could not get my hand on any peas.
But will try the mosquito thing. thanks for letting me know.

You are welcome.

BTW, I never succeeded in feeding them blanched peas. .... gosh. ... great.