$q = new WP_Query( 'posts_per_page=5' );

$args = array (
    'post_type'              => 'custom_post',
    'nopaging'               => false,
    'posts_per_page'         => '5',
    'order'                  => 'DESC',
    'orderby'                => 'ID',
);

$query = new WP_Query( $args );

if ( $query->have_posts() ) {
    while ( $query->have_posts() ) {
        $query->the_post();
        // display content
    }
} else {
    // display when no posts found
}

wp_reset_postdata();     // Restore original Post Data

$args = array(
        'post_type' => 'blog_posts',
        'posts_per_page' => '5',
);


$query = new WP_Query($args);