public class Fish extends Animal{

private int gills;

private int fins;

public Fish(String type, String size, double weight, int gills, int fins) {

super(type, "size", weight);

this.gills = gills;

this.fins = fins;

}

private void moveMuscles(){

System.out.println("Muscles moving");

}

private void moveBackfin(){

System.out.println("Move backfin");

}

@Override

public void move(String speed) {

super.move(speed);

moveMuscles();

if (speed=="fast"){

moveBackfin();

}

System.out.println();

}

@Override

public String toString() {

return "Fish{" +

"gills=" + gills +

", fins=" + fins +

"} " + super.toString();

}

}