Common name: Flabellinid nudibranchs

Flabellinidae, commonly known as flabellinid nudibranchs, are a family of colorful, elongated sea slugs found in various marine environments. They are known for their striking appearance, with cerata that resemble a feathery plume. These nudibranchs are often sought after by advanced aquarists for their beauty and unique behavior. They feed on a variety of small invertebrates and hydroids, making them both a challenge and a delight to keep in a specialized reef or species-only aquarium. Observing their intricate life cycle and behaviors can be a rewarding experience for dedicated hobbyists.

1. 
   Common name: much-desired flabellina

   Scientific name: Flabellina exoptata
2. 
   Common name: purple aeolis

   Scientific name: Flabellina iodinea
3. 
   Common name: striped flabellina

   Scientific name: Flabellina lineata
4. 
   Common name: red-lined flabellina

   Scientific name: Flabellina rubrolineata