is it possible to catch the fish that have passwords without entering the password. i know that sounds weird but curious if it was possible before i actually enter the passwords. thanks
Nope, you can't catch them without the passwords being entered. =(
Also, just a reminder, you probably want to catch all of the other fish first (and maybe even S-Rank them as well). Some fish are harder to catch with the passwords entered because you have an extra fish that will try and take your bait. So, be careful of when you enter them! However, it is entirely up to you at what time you want to enter them and is your choice.