Abyssrium

					
Microtransaction Fish:

The fish below can only be unlocked when you purchase the indicated package through microtransactions.
Lionfish:

Buy the Junior Package.
Black and White Clownfish:

Buy the Beginner Package.
Giant Jellyfish:

Buy the Advanced Package.
Humpback Whale:

Buy the Master Package.
Harp Seal:

Buy the Supreme Package.
Unlock New Fish:

Complete the following tasks to unlock the corresponding fish.
Blue Clownfish:

Take a picture of a clownfish 3 times.
Camel Cowfish:

Share a picture of a blowfish 3 times.
Clown Tang:

Take a picture of a tang 5 times.
Commerson Dolphin:

Save a picture of Lonely Coralite 3 times (This is what the game says, but it seems like a bug. To truly unlock the Commerson Dolphin, save a picture of a dolphin 3 times).
Convict Tang:

Leave the app open and active, but do not touch it or do anything else for an hour.
Cross Damsel:

Take a picture of a damsel 3 times.
French Angel:

Save a picture of an angelfish 3 times.
Hammerhead Shark:

Save a picture of a shark 3 times.
Jewel Damsel:

Tap the upper left corner of the screen a thousand times.
Juvenile Spotted Boxfish:

Start the app by clicking on a notification. You have a 10% chance of unlocking the fish after not playing for 2 hours.
Leatherback Turtle:

Open 50 Mystery Chests.
Mahi Mahi:

Play at midnight 10 times.
Manta Ray:

Share a picture of a sting ray on Twitter 3 times.
Mauve Stinger:

Take a picture of a jellyfish 10 times.
Moorish Idol:

Take a picture of the Mystery Chest 5 times, being sure to focus on the chest and not the Coralite.
Narwhal:

Tap the top-left corner 5,000 times.
Pajama Cardinal:

Play the game 20 times in one day.
Potbelly Seahorse:

Share a picture of a seahorse 3 times.
Pygmy Seahorse:

Play at 4:00am 5 times.
Randall Goby:

Take a picture of a goby 3 times.
Scribbled Angelfish:

Click the ‘see more’ button in the Photo screen 10 times.
Snowflake Clownfish:

Click the Twitter button 10 times in the settings menu.
Spotted Mandarin Dragonet:

There’s a small chance to unlock this when you open the app from a notification.
Springer Dottyback:

Share a photo on Twitter 3 times.
Striped Marlin:

Simply take a picture of the marlin when it visits. There’s a small chance of it swimming by once every half hour.
Whale Shark:

Much like the spotted boxfish above, simply start the app by clicking on a notification. You have a 10% chance of unlocking the fish after not playing for 2 hours.