How many types of betta fish do you know?
In a shop full of beautiful fresh water and marine fish, you can recognize the exotic fish within minutes.
It has small body, with long fins. What about in a room full of betta fishes? The possibility of you being confused and call the wrong name is high.
The first thing you will notice is the color. Then, after short observation, you can see that the fins are varied.
Each of these types carries different names. That is how the fish maniac gets one level deeper about betta fish knowledge.