Marissa Hake, DVM, shares how goldfish help keep stock tanks clean. The goldfish stocking rate is one fish per 30 gallons of water. The fish do not need to be fed and can survive off chunks that fall in from cows’ mouths. Source: calfvet, Instagram, June 5, 2022. Link. Also see: Fish in the water trough, Dr Erik Johnson, Veterinarian, September 1, 2020. Link. By adding … [Read more...]