I've been hired to illustrate some Trail Signs for the Mountain Lake restoration. This freshwater native we found in Lobos Creek.
Obviously dead, not sure how to tell if it's armored, partially armored or unarmored.
Abundant; observed during fish sampling
I went on an outing with WildEquity and some kids from Downtown High School to help out Professor Karen Crow from SFSU. She and her students were using a seine to capture threespine sticklebacks for study, but we also caught some tidewater gobies and a prickly sculpin!
The Gasterosteidae are a family of fish including the sticklebacks. FishBase recognises sixteen species in the family, grouped in five genera. However several of the species have a number of recognised subspecies, and the taxonomy of the family is thought to be in need of revision. Although some authorities give the common name of the family as "sticklebacks and tube-snouts", the tube-snouts are classified in the related family Aulorhynchidae.