TA-DA. It's dooooone. ' u '
Here's all the pokedex stuff in case it's hard to read:

ETIRPS
the sprite pokemon

Amber Version: They live in family colonies in rivers and swamps. They're very playful, hiding in puddles to surprise passersby.

Amethyst Version: It learns to heal young, and takes its loved ones' pain as its own. It imprints on the first trainer that catches it, and protects them viciously.

DIEREN
the nereid pokemon

Amber: It teams up with BLITZCHIM and other DIEREN to forage for food when it's old enough to leave the nest. It can hunt or fish if it needs to as well.

Amethyst: It is extremely volatile in this phase, and will develop an unhealthy attachment to its trainer if left unchecked. It is very possessive of both the trainer and their other pokemon.

NERIS
the siren pokemon

Amber: When it matures, it will form its own family groups with two or three mates. It's not uncommon for NERIS to have a STORMILLA as one of its mates. It's very affectionate and dotes on its family.

Amethyst: While it's mellowed out since it's evolved, it can still be very violent at a moment's notice when its loved ones' safety is in jeopardy. It will take the lives of others to protect them, and is a master of taking its own pain and giving it to its enemies, as taking its loved ones' pain into itself.