Who Gives A Fish Forums

Duncans usually go for around 5 bucks per head around here, assuming it's fully grown. Babies aren't factored into the price, so the smaller ones on your Duncan wouldn't add much value. The frogspawn's probably worth around 10 bucks, and like I said, the babies don't really count for pricing ...

I'm not thinking it's a sponge, though. The goni does look a bit under the weather, and I'm worried. They're notoriously tricky to keep healthy, so I'm not surprised.