The _____ of a fish helps it move up and down in the water A. S...

A fish can swim 45 miles downriver in the same amount of time that it can swim 27 miles upriver. So...

How do fisheries renew themselves? Fish swim in from other areas. The fish at lower depths sw...

23. The _____ of a fish helps it move up and down in the water. gills swim bladder...