Jame'sll tell ya trout, I'LL tell ya tilapa.
It's very high in protein, B1, and very low in fat.
Also, in my experience, cheaper by the pound. *Around $4 a pound here.*
And if you REALLY need to switch mama, buy a small feeder goldfish, freeze it, then cut it in half and smear the guts *Especially the liver and gut areas if you can cut it directly in half* on the fish piece you're going to feed to the snake. I will GUARANTEE it will work EVERY TIME.