Fishing Sim World Trophy Bass?

Ok there is a achievement for catching 50 Trophy Bass. So what counts as a Trophy Bass?

 

I think any Largemouth over 10Ib & any Smallmouth over 5Ib counts as a trophy Bass.
That's what I can work out from my trophy fish page,could be wrong though.

 

Hey Space Oddity , just saw your name in this week's match tourny , any way for some reason the trophy bass are not named like the other "boss" fish. It just says Trophy catch when you get one.