Do you have lots of ink already? I don't like the idea of names on the bicep. It make me think of all the people you see around that thought they were though when they were young and just have 1 tattoo on their bicep and it looks so out of place. Maybe go long ways down the back of forearm or tricep. But if you have another kid then you may have to explain why their name doesn't match the others. I have my wife's name tattooed right across the top of my hand. BIG too. And on my heart. I've been with her 19 years so I'm screwed anyway if we ever end it. I have both of my kids done at separate times in a banner with script writing their names. The banners are under skulls on different part of my body the skull symbolizes each of them. The skull itself is the same design but the boy has a baseball hat kicked sideways. And the girl has eyelashes with a lock of hair with a pink bow in it. As far as the fish goes I don't know I'm in the same predicament as far as placement. I'm leaning toward my whole back right now.
