getInfo function not working

<?php

class Fish
{
    public $common_name;
    public $flavor;
    public $record_weight;

    function __construct($name, $flavor, $record){
        $this->common_name = $name;
        $this->flavor = $flavor;
        $this->record_weight = $record;
    }

    public function getInfo() {
        $output  = "The {$this->common_name} is an awesome fish. ";
        $output .= "It is very {$this->flavor} when eaten. ";
        $output .= "Currently the world record {$this->common_name} weighed {$this->record_weight}.";
        return $output;
    }
}

class Trout extends Fish{
 public $species;
 public function __construct($name, $flavor, $record,$species)
    {
        parent::__construct($name, $flavor, $record);
        $this->species = $species;
    }

  public function getInfo(){
    return $this->species . " " . $this->common_name . "tastes " . $this->flavor .". The Record ". $this->species . " " . $this->common_name . " weighted " . $this->record_weight;
  }

}
$brook_trout = new Trout("Trout","Delicious","14 pounds 8 ounces","Brook");
echo $brook_trout->getInfo():
?>