- 
        
    
 
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    - 
        
            
                
                    sample data 
                       
                    
                         
                       
                 | 
             
         
     
    
    
    
    - 
        
    
 
    
    - 
        
    
 
    
    
    
    
    
    
    
    
    - 
        
            
                
                    sample data 
                       
                    
                         
                       
                 | 
             
         
     
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    
    - 
        
            
                
                    sample publication 
                       
                    
                         
                       
                 | 
             
         
     
    
    
    
    
    
    
    
    
    
    
    
    
    
 
    
    
    
 
 | 
Entrez Taxonomy
 
    
        | 
            Lepisosteus osseus, the longnose gar, is a ray-finned fish whose
            genus may have existed in North America for 100 million years.  The
            gar has retained some ancient morphological structures such as a
            spiral valve intestine and a highly vascularized swim bladder.  The
            latter can serve to supplement gill respiration, allowing gars to
            breathe air and thus to exist in low-oxygen aquatic environments.
            The gar is typically found in relatively still fresh or brackish
            water in the eastern parts of the United States, Central America, 
            and Cuba.  The gar has a long lifespan of 15-20 years, with the
            female typically reaching sexual maturity as late as 6 years old.
            They can grow up to 1.5 meters long and weigh up to 25 kg.
            
         | 
        
             
         | 
     
 
 | 
  |