Out-of-universe, the salarians of Mass Effect were based heavily on the stereotypical "Gray Man" aliens made famous by the supposed Roswell UFO crash. Their long thin limbs, enormous eyes, relatively featureless faces, tall heads, etc, all strongly evoke that popular "alien" design.
In-universe, the salarians are famously talented scientists, and notable as being the primary "uplifting" races of the galaxy, having uplifted the krogan from pre-spaceflight status during the Rachni Wars, and studying the yahg (as we see in ME3), another pre-spaceflight species. Their ships, while not stereotypically saucer-shaped, were designed to be smooth and rounded, along the lines of marine animals.
Given that Humanity was clearly on the verge of spaceflight in the mid-20th century, and given that there was a mass relay in Earth's own system, it would make sense that the salarians would be aware of and interested in Humanity's development, and that their interest would take the form of abducting and studying human specimens (just like the krogan and yahg).
Is this connection ever established in-universe? In the world of Mass Effect, did a salarian ship crash in New Mexico and inspire the Roswell alien archetype? Or are their physical and behavioral similarities merely a coincidence?