CHAP. 42. (26.)—FISHES WHICH CHANGE THEIR COLOUR.

The mæna changes[2506] its white colour, and in summer becomes swarthy. The phycis[2507] also changes its colour, and while at other times it is white, in spring it is parti-coloured. This last is the only fish that builds itself a nest; it makes it of sea-weed, and there deposits its eggs.