The Thai Silk is an all blue flowerhorn. It is the only one of its kind to display solid blue body. It is also referred to as the Titanium or Blue Diamond Flowerhorn. 

Flowerhorn cichlids are ornamental aquarium fish noted for their vivid colors and the distinctively shaped heads for which they are named. Their head protuberance, or kok, is formally termed a nuchal hump. Like blood parrot cichlids, they are man-made hybrids