The green and black color of this beautiful newt blend well with the aquatic vegetation.
Newts, a subset of salamanders in the family Salamandridae, may be found in both the New and Old Worlds. The males of many of the Old World taxa develop nuptial finery (seasonally present and often exaggerated caudal, nuchal, and vertebral finnage) that, no matter the season, no New World species ever has.

And of these Old World salamandrid dandies, IMO one of the most beautiful is the black on forest green (more rarely the black may predominate) marbled newt, Triturus marmoratus, of Spain, Portugal, and France.

Black on green may sound flamboyant, and indeed it is when seen in a home terrarium or aquarium. But when at home in the dappled sunlight and submerged vegetation of a woodland pond, the color combination is a surprisingly effective camouflage.
Although high and very noticeable the even-edged black and green banded vertebral and caudal finnage of this large (it attains a stocky 4 ½ - 6”) newt is less ornate that that of several of its cousins. The nuptial fins of these latter are prettily scalloped. But what the marbled newt lacks in fin appearance is more than compensated for by beauty of color. And as just a bit of added splendor, when, following the breeding season the fins of the marbled newt are resorbed, they remain represented by an orange middorsal ridge. Can you say “pretty?”