Here is the full list of all 29 I Am Fish achievements.
Complete the game in Iron Fish mode
In Forest Stream do not alert the seagulls.
Get 5 stars on every level.
Collect every piece of bread.
Fight the fisherman for over 40 seconds.
Escape Nigel in less than 3 minutes.
Find your place among the stars.
Complete your secret mission.
Get a 5 Star rating on any level.
Get all the fish back in the ocean... with some extra friends!
Don't give up now! You almost made it!
Reunite the four fish friends!
Get the Flying Fish to the ocean.
Jumped too early.
Get the Piranha to the ocean.
Get the Pufferfish to the ocean.
Not the most glamourous of escapes.
Get the goldfish to the ocean.
Find all bread collectables on a level.
Curse this spherical prison!
Find your first bread collectable.
Take the first step to freedom.
Complete the game in Iron Fish mode with Bossa Style controls
Pull out the plug in the bath.
Get Greg to the bathroom in less than 3 minutes.
Smash all the fishbowls in the Aquarium.
It's unconventional, but it works.
Uncover remnants of a lost world.
Earn every achievement.