Talkng about Reefs:
Flittery, Flashy, Fun Fish:
Discount School Supply Fish Shape
Discount School Supply Glue
Discount School Supply Flitter
Another fun book about one flashy fish:
Bright Stanley by Matt Buckingham
Having overslept on the day his school swims to cooler waters for the summer, a little fish sets off on an adventure as he tries to catch up with his bright, glittery friends.