Family Atherinidae - silversides
Silversides are cosmopolitan in distribution and occur in all aquatic environments. The two dorsal fins and elongated body are distinguishing characteristics of the silversides. Silversides commonly form schools near shore and serve as important forage fish.
Topsmelt- Atherinops affinis
Remarks: Although thought to be in the bay most of the year it is seldom seen. This is a smaller fish serving as forage for the larger predators of the bay. Spawns over mudflats.
Identification: Silvery green in coloration with bright silver sides and white undersides. There are two dorsal fins and the anal fin originates right below the first dorsal fin. The mouth is small with a single row of forked teeth.
Range: Commonly forms schools and remains inshore from Vancouver to the Gulf of California.
Jacksmelt- Atherinopsis californiensis
Remarks: Common to the bay and caught with some frequency by sportfishers. Jacksmelt can be found around piers and within the deeper channels. It is also a smaller fish and is preyed upon by many predators. Spawns over vegetation in shallow tidal channels and mudflats.
Identification: Similar to the topsmelt in appearance having only subtle differences. There are two dorsal fins with the origin of the anal between the dorsal fins. The mouth is small and there are many rows of unforked teeth.
Range: Can be found from Oregon to southern Baja forming large schools in near shore waters.