it won't show up in the recipe gui but you should get 0.15 for each sold fish...
minus the selling penalty of 45% by default...
if that doesn't work you can send me your save game and i can add support for all your mods (except angels/bobs..)
hm it won't sell for me but I don't really care about the fish as they are a hidden nuance in the game that provides a way to heal other than natural regen
