Gnalish

The Gnalish are a sapient reptilianoid humanoid species with scaly green skin and large bulging eyes. They are digitigrade bipeds with long reptilian tails for balance, and are considered physically strong by Human standards. They also have a short crest adorning the head, the exact function of which remains unknown.

Behind the scenes
The name of this species is officially considered non-canon, as used in the Star Trek: Stargazer series of novels. It is also established there that they are native to planet Gnala and are one of the members of the United Federation of Planets.