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New betta fish breathing fast and swimming quickly after feeding?

Updated On September 23rd, 2025

Pet's info: Fish | Unknown - Fish | Male

Hey! Just got a beta fish and he is swimming fine... but after I fed him, he seemed to “hyperventilate”! But then again, he’s swimming fine. Is this okay? He’ll also swim really fast at some points. Is he just nervous?

1 Answer

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on June 30th, 2018

Monitor for redness, white spots or fuzzy growths on him. The swimming fast may be "flashing", which a fish with an infection will do to "scratch an itch". Maintain pristine water quality via filtration and partial water changes. Use only aged or conditioned water that is temperature matched to prevent stress or shock when performing water changes. Bettas do best between 78 F and 80 F. Monitor water chemistry to confirm 0 ppm ammonia and nitrites with nitrates at 320 ppm or less. If you don't have a home test kit, most pet stores will test water for free or for a small fee.

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