Common name: Phestilla Nudibranchs

Phestilla is a genus of small, colorful nudibranchs found in tropical reefs. They are known for their specialized feeding habits, often preying on specific types of corals, such as Porites. This genus includes species like Phestilla melanobrachia and Phestilla sibogae. Hobbyists should note that while they are fascinating creatures, their coral-eating behavior can pose a risk to reef aquariums. They are best observed in specialized systems where their diet can be managed without harming valuable coral specimens.

1. Common name: Phestilla lugubris

   Scientific name: Phestilla lugubris
2. 
   Common name: black gilled phestilla

   Scientific name: Phestilla melanobrachia