EntityQ5454628· pop 6· linked from 205 articlesFish gillSign in to saveorgan that allows fish to breathe underwaterConnectionsparasitismEntitylamellaEntityAmphibiaEntityChondrichthyesEntityTetrapodaEntityOsteichthyesEntityBatomorphiEntitygillEntityAgnathaEntitylampreyEntitydemersalEntityBranchial archEntityfishEntityoxygenEntitymammalEntitytable saltEntityevolutionEntitylungEntitytoothEntitysharkEntityCategoriesFish anatomyOrgans (anatomy)Respiratory system