You can gain access to this Substory during Getting Ready for Goku, when you are meant to visit Bulma for the second time. Head to Goku’s house and inside will be Goten, who will start this. Goten is bored and wants to go play, but Chi-Chi is not exactly pleased that he isn’t doing his studies. To help out his mother, Gohan decides to go fishing for her, but Goten wants to tag along. Before heading out, Chi-Chi mentions that she wants you to catch three Blue Fish. You will automatically go to the fishing spot, so it’s time to catch some aquatic creatures. As their name suggests, Blue Fish are blue in color and very easy to tell whenever they come out of the water. However, you have no idea you have one hooked, so it might take a little bit to get three of them.

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(1 of 2) The Blue Fish is definitely bluer than any other

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The Blue Fish is definitely bluer than any other (left), Goten only knows Goten Attack, which is easy enough to avoid/block (right)

Once you get all three, Goten wants to do one more thing before heading home, which is to fight you. As a fight, Goten is very simple, as the only Super Attack he has is just him charging straight at you (Goten Attack). He does seem a little aggressive at times, but it’s nothing you can’t handle at this point in the game. Upon winning the battle with Goten, the substory will end.