Python v2.7. PyGame. Difference in pixels size between image.load and image.fill

I'm trying make a simple game on Python v2.7 (something like a danmaku shooter)

I've got problem with this part

import os
from pygame import *

MOVE_SPEED = 3
WIDTH = 10
HEIGHT = 10
COLOR = "#F52525"

class Player(sprite.Sprite):
    def __init__(self, x, y):
        sprite.Sprite.__init__(self)
        self.xvel = 0
        self.yvel = 0
        self.startX = x
        self.startY = y
        self.image = Surface((WIDTH,HEIGHT))
        #self.image.fill(Color(COLOR))
        self.image = image.load("images/player.png")
        self.rect = Rect(x, y, WIDTH, HEIGHT)

"player.png" size is 40x60, but I need in actual size 10x10 rectangle at the center of image which will interact with the game logic (with option to display over or not).