Traits

Requires: Circle Freckles (this is just to show that you can make the freckles any size you want)

Requires: Crystalized Gems and Overgrown Gems

Requires: Corrupted Gems and Overgrown Gems

Requires: Sphirix Tail

Continuous tail: Swims at slow speed but highly manoeuvrable, enabling access into crevices and caves (e.g. cobbler).
Source

Requires: Sphirix Tail

Lunate tail: Very fast fish, able to maintain high speeds for long periods of time, but a lack of surface area means they can't stop or turn easily or swim backwards (e.g. tuna).
Source

Requires: Sphirix Tail

Forked tail: Cruising fish that swim continuously at very fast rate (e.g. tailor and Australian herring). Extra fin surface provides more manoeuvrability than fish with a lunate tail.
Source

Requires: Sphirix Tail

Truncate tail: Cruises at intermediate speeds, with increased manoeuvrability due to even larger surface area (e.g. mangrove jack). Also able to accelerate quickly when needed. 
Source

Requires: Sphirix Tail

Rounded tail: Swims at intermediate speeds, with greater manoeuvrability, and able to accelerate quickly for short periods (e.g. Estuary cod).
Source

Requires: Flame Fluffs (does NOT require bat wing fluffs, it's just that the flames are sort of shaped like that)

Requires: Heart Freckles and Crown Freckle Pattern

Requires: Shrinking Freckles Pattern and Droplet Freckles

Requires: Shrinking Freckles Pattern, Quattro Freckle Pattern, Circle Freckles and Ray Freckles

Requires: Shrinking Freckles Pattern, Quattro Freckle Pattern, Circle Freckles and Moon Freckles

Requires: Vertical Shrinking Freckles Pattern, Swirl Freckles and Droplet Freckles

Requires: Petal Freckles and Cinque Freckle Pattern

Requires: Freckle Contour, Rhombus Freckles and Crown Freckle Pattern

Requires: Linear Freckles

Requires: Linear Freckles

Requires: Shrinking Freckles Pattern

Requires: Leaf Freckles and Crown Freckle Pattern