translate English to French: The color of the back of this fish is highly variable (silvery green, grey, olive, greenish brown, mottled or black) while the sides are paler and the underparts are silvery.
La couleur du dos de ce poisson varie (vert argentÃ©, gris, olive, brun verdÃ¢tre, tachetÃ© et noir) alors que les cÃ´tÃ©s sont plus pÃ¢les et que les parties infÃ©rieures sont argentÃ©es.