Biometric comparisons of three spawning populations of surf smelt, one from Pacific Coast and two from Puget Sound, were made. The Puget Sound populations (Hood Canal and Utsaladdy) were more similar to each other compared to the ocean populations. The Hood Canal and Utsaladdy smelt exhibited least distance function, D^2 , and greater overlap of meristic characters compared to the Lapush fish. It was postulated that the Puget Sound smelt populations were derived from the ocean smelt some 13,000 or more years ago.
Kilambi, Raj V.
"Heterogenity of the Spawning Populations of Surf Smelt in the State of Washington,"
Journal of the Arkansas Academy of Science: Vol. 39
, Article 15.
Available at: http://scholarworks.uark.edu/jaas/vol39/iss1/15