Combined by Transformation!
From Starfy Wiki
Combined by Transformation! (Japanese: 合体してへん身!) is one of three manga based on The Legendary Starfy featured in the November 2008 issue of Enterbrain's Video Game Magazine on page 32. It was presumably created by Hitoshi Ogino, who made Defeat the Enemy! on page 28; the first of these manga. The second of the three manga is Hidden Room Discovery! on page 30.