I see your point, but as a fisherman IRL I really like seeing these fish in game. All of those types of bass are common when bass fishing. The other fish are common as well (except for the lamprey, eels, mussels and suckers).
I do get what you are saying with minnows though, but at this point, this mod has become more of an animal crossing collector type mechanic. From a base builder game mechanic point of view these fish are just names with no meaningful difference in terms of fort survival, but from a collection/trophy hunter point of view, the fish have a wide variety of locations, seasons and rarities.
The minnows were originally added as a way to "buffer" the game fish rarity (as there is no "you didnt get a bite" mechanic), but they have become part of the animal crossing esc collection book. And fish are presumably caught by hand, net or pole so it isn't too hard to visualize their capture.
After weeks of development, I would now say that this mod is for players that would like to see a wide variety of fish added to their game or players that enjoy an animal crossing esc collection mechanic. This mod is not focusing on fort survival/utility and is mainly focused on the actual fish (not the fish industry).
With that said, this mod has been constructed in a very unique way. With one tag you can remove all minnows from the mod...