Species exclusive upgrades are exactly as they sound. All Bouiboa-exclusive upgrades are on the left column, while Moukiis are on the right. They are labeled as such in their descriptions as well for mobile users. It is impossible for a Moukii to get Bouiboa upgrades and vice versa!
Bouiboa
Remove Ear Tie
Letting down your...ears? EXP Needed: 100 Requirements: None, Bouiboa only
Moukii
Add Ear Ties
Want to pull back those big ol' ears? EXP Needed: 100 Requirements: None, Moukii only
Coral Growths
Small patches of coral that grows from their body! EXP Needed: 150 Requirements: None, Bouiboa only
Plant Growths
Small patches of plants that grows from their body! Can bloom. EXP Needed: 150 Requirements: None, Moukii only
Remove Gills
They cannot breath underwater anymore! EXP Needed: 350 Requirements: None, Bouiboa only
Add Gills
They can now breath underwater! EXP Needed: 350 Requirements: None, Moukii only
Four Fingers
The fin has split into four fingers rather than two! EXP Needed: 500 Requirements: None, Bouiboa only
Dual Fangs
A second pair of Moukii 'fangs'! EXP Needed: 500 Requirements: None, Moukii only