seizures or Spasms
seizers are not good , how often are you able to change water ?
Sevs can get large and messy , they need a good regimen of regular cleaning , and water changes to reduce the amount of nitrates , amoung other waistes that can build up in your tanks water .
Try and get in a good water change soon if possible , as long as you are under water use restriction feed them less than you normaly would , this will slow down the need for water changes , but just by a little .
Try and find a product to use as filter media to aid in reduction of nitrates as long as you are resticted from over using water , "Seachem" makes something.
spasms are usually part of the spawning process , but can be caused by other things ..........