I have confirmed that Tilapia are not legal in northern CA. I was misled by some information I found.
Our pond had two fish species in 2010 when I drained it most of the way. I netted fish from the teeming pool at the bottom to have a look. One was orange, about 3" long, a goldfish I guess; and the other was shaped like a bluegill but with a pronounced dorsal bump and only 3-4" long. I probably killed them by reducing their pond to a puddle for several summer months. What were they? The Azolla became a problem starting in 2012, so I guess the fish had been keeping it under control.
