The explosion in the Abuja shopping district is the third bomb blast in as many months.
No one has yet claimed responsibility for the blast.
More top news
The youngest royal will make her second public appearance later this afternoon when she is baptised in Norfolk.
Jayln Rippy died and her mother and brother were seriously injured by the fish, which can grow up to eight feet long.
European nations are collectively consuming more fish than its waters can provide, according to a new study.